48 research outputs found
Dispersive calculation of complex Regge trajectories for the lightest f2 resonances and the K⁎(892)
- Author
- Carrasco J.A.Departamento de Física Teórica II, Universidad Complutense de Madrid, Madrid, 28040, Spain
- Nebreda J.(Departamento de Física Teórica II, Universidad Complutense de Madrid, Madrid, 28040, Spain)
- Pelaez J.R.(Departamento de Física Teórica II, Universidad Complutense de Madrid, Madrid, 28040, Spain)
- Szczepaniak A.P.(Physics Department, Indiana University, Bloomington, IN, 47405, USA)
- Publication venue
- Publication date
- Field of study
We apply a recently developed dispersive formalism to calculate the Regge trajectories of the f2(1270) , f2′(1525) and K⁎(892) mesons. Trajectories are calculated, not fitted to a family of resonances. Assuming that these resonances can be treated in the elastic approximation, the only input are the pole position and residue of a resonance. In all three cases, the predicted Regge trajectories are almost real and linear, with slopes in agreement with the universal value of order 1 GeV −2 . We also show how these results barely change when considering more than two subtractions in the dispersive formalism
Non-perturbative QCD effects in q T spectra of Drell-Yan and Z -boson production
- Author
- D’Alesio UmbertoDipartimento di Fisica, Università di Cagliari, I-09042, Monserrato, CA, Italy
- Echevarria Miguel(Nikhef and Department of Physics and Astronomy, VU University Amsterdam, De Boelelaan 1081, NL-1081 HV, Amsterdam, The Netherlands)
- Melis Stefano(Dipartimento di Fisica, Università di Torino, Via P. Giuria 1, I-10125, Torino, Italy)
- Scimemi Ignazio(Departamento de Física Teórica II, Universidad Complutense de Madrid (UCM), 28040, Madrid, Spain)
- Publication venue
- Publication date
- Field of study
The factorization theorems for transverse momentum distributions of dilepton/boson production, recently formulated by Collins and Echevarria-Idilbi-Scimemi in terms of well-defined transverse momentum dependent distributions (TMDs), allows for a systematic and quantitative analysis of non-perturbative QCD effects of the cross sections involving these quantities. In this paper we perform a global fit using all current available data for Drell-Yan and Z -boson production at hadron colliders within this framework. The perturbative calculable pieces of our estimates are included using a complete resummation at next-to-next-to-leading-logarithmic accuracy. Performing the matching of transverse momentum distributions onto the standard collinear parton distribution functions and recalling that the corresponding matching coefficient can be partially exponentiated, we find that this exponentiated part is spin-independent and resummable. We argue that the inclusion of higher order perturbative pieces is necessary when data from lower energy scales are analyzed. We consider non-perturbative corrections both to the intrinsic nucleon structure and to the evolution kernel and find that the non-perturbative part of the TMDs could be parametrized in terms of a minimal set of parameters (namely 2-3). When all corrections are included the global fit so performed gives a χ 2 / d . o . f . ≲ 1 and a very precise prediction for vector boson production at the Large Hadron Collider (LHC)
MAGIC detection of short-term variability of the high-peaked BL Lac object 1ES 0806+524
- Author
- A. Babic(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- A. Biland(ETH Zurich CH-8093 Zurich, Switzerland)
- A. Carosi(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- A. De Angelis(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- A. Fernández-Barral(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- A. González Mu. noz(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- A. La Barbera(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- A. López-Oramas(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- A. Moralejo(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- A. Niedzwiecki(University of Łódź PL-90236 Lodz, Poland)
- A. Overkemping(Technische Universität Dortmund D-44221 Dortmund, Germany)
- A. Readhead(Cahill Center for Astronomy and Astrophysics California Institute of Technology, Pasadena CA, 91125, USA)
- A. Sillanpää(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- A. Stamerra(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- A. Treves(Università dell'Insubria and INFN Milano Bicocca Como, I-22100 Como, Italy)
- B. Biasuzzi(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- B. De Lotto(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- B. Marcote(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- C. Delgado Mendez(Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, E-28040 Madrid, Spain)
- C. Fruck(Max-Planck-Institut für Physik D-80805 München, Germany)
- C. Schultz(Università di Padova and INFN I-35131 Padova, Italy)
- D. Dominis Prester(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- D. Dorner(Universität Würzburg D-97074 Würzburg, Germany)
- D. Eisenacher(Universität Würzburg D-97074 Würzburg, Germany)
- D. Elsaesser(Universität Würzburg D-97074 Würzburg, Germany)
- D. F. Torres(ICREA and Institute of Space Sciences E-08193 Barcelona, Spain)
- D. Fidalgo(Universidad Complutense E-28040 Madrid, Spain)
- D. Galindo(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- D. Garrido Terrats(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat)
- D. Gasparrini(33 \,34)
- D. Hadasch(Institute of Space Sciences E-08193 Barcelona, Spain)
- D. Hrupec(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- D. Lelas(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- D. Mazin(Max-Planck-Institut für Physik D-80805 München, Germany)
- D. Nakajima(Japanese MAGIC Consortium KEK, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, ICRR, The University of Tokyo, Japan)
- D. Paneque(Max-Planck-Institut für Physik D-80805 München, Germany)
- D. Sobczynska(University of Łódź PL-90236 Lodz, Poland)
- D. Tescaro(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- E. Bernardini(Deutsches Elektronen-Synchrotron)
- E. Carmona(Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, E-28040 Madrid, Spain)
- E. Colombo(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- E. de O. na Wilhelmi(Institute of Space Sciences E-08193 Barcelona, Spain)
- E. Lindfors(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- E. Lorenz(Max-Planck-Institut für Physik D-80805 München, Germany)
- E. Prandini(ETH Zurich CH-8093 Zurich, Switzerland)
- F. Borracci(Max-Planck-Institut für Physik D-80805 München, Germany)
- F. D'Ammando(INAF-IRA Bologna Via Gobetti 101, I-40129, Bologna, Italy)
- F. Dazzi(Max-Planck-Institut für Physik D-80805 München, Germany)
- F. Di Pierro(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- F. Longo(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- F. Tavecchio(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- G. Bonnoli(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- G. De Caneva(Deutsches Elektronen-Synchrotron)
- G. Maneva(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- H. Kellermann(Max-Planck-Institut für Physik D-80805 München, Germany)
- H. Kubo(Japanese MAGIC Consortium KEK, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, ICRR, The University of Tokyo, Japan)
- H. Takami(Japanese MAGIC Consortium KEK, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, ICRR, The University of Tokyo, Japan)
- I. Lozano(Universidad Complutense E-28040 Madrid, Spain)
- I. Puljak(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- I. Snidaric(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- J. A. Barrio(Universidad Complutense E-28040 Madrid, Spain)
- J. Aleksić(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- J. Becerra González(8 \,25)
- J. Cortina(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- J. Herrera(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- J. Hose(Max-Planck-Institut für Physik D-80805 München, Germany)
- J. Krause(Max-Planck-Institut für Physik D-80805 München, Germany)
- J. Kushida(Japanese MAGIC Consortium KEK, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, ICRR, The University of Tokyo, Japan)
- J. L. Contreras(Universidad Complutense E-28040 Madrid, Spain)
- J. M. Miranda(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- J. M. Paredes(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- J. Poutanen(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- J. Richards(Department of Physics Purdue University, 525 Northwestern Ave, West Lafayette, IN 47907, USA)
- J. Rico(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- J. Rodriguez Garcia(Max-Planck-Institut für Physik D-80805 München, Germany)
- J. Sitarek(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- J. Thaele(Technische Universität Dortmund D-44221 Dortmund, Germany)
- K. Berger(Department of Physics and Astronomy and the Bartol Research Institute University of Delaware, Newark, DE 19716, USA)
- K. Frantzen(Technische Universität Dortmund D-44221 Dortmund, Germany)
- K. Kodani(Japanese MAGIC Consortium KEK, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, ICRR, The University of Tokyo, Japan)
- K. Mallot(Deutsches Elektronen-Synchrotron)
- K. Mannheim(Universität Würzburg D-97074 Würzburg, Germany)
- K. Nilsson(20 \,28)
- K. Nishijima(Japanese MAGIC Consortium KEK, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, ICRR, The University of Tokyo, Japan)
- K. Noda(Max-Planck-Institut für Physik D-80805 München, Germany)
- K. Saito(Japanese MAGIC Consortium KEK, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, ICRR, The University of Tokyo, Japan)
- K. Satalecka(Universidad Complutense E-28040 Madrid, Spain)
- L. A. Antonelli(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- L. Font(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat)
- L. Maraschi(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- L. Takalo(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- M. Doro(Università di Padova and INFN I-35131 Padova, Italy)
- M. Garczarczyk(Deutsches Elektronen-Synchrotron)
- M. Gaug(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat)
- M. Hayashida(Japanese MAGIC Consortium KEK, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, ICRR, The University of Tokyo, Japan)
- M. L. Knoetig(ETH Zurich CH-8093 Zurich, Switzerland)
- M. López(Universidad Complutense E-28040 Madrid, Spain)
- M. Makariev(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- M. Mariotti(Università di Padova and INFN I-35131 Padova, Italy)
- M. Martínez(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- M. Nievas Rosillo(Universidad Complutense E-28040 Madrid, Spain)
- M. Palatiello(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- M. Persic(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- M. Ribó(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- M. Strzys(Max-Planck-Institut für Physik D-80805 München, Germany)
- M. Teshima(Max-Planck-Institut für Physik D-80805 München, Germany)
- M. V. Fonseca(Universidad Complutense E-28040 Madrid, Spain)
- M. Will(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- MAGIC Collaboration
- N. Godinović(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- N. Lewandowska(Universität Würzburg D-97074 Würzburg, Germany)
- O. Blanch(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- P. Antoranz(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- P. Bangale(Max-Planck-Institut für Physik D-80805 München, Germany)
- P. Colin(Max-Planck-Institut für Physik D-80805 München, Germany)
- P. Da Vela(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- P. G. Prada Moroni(Università di Pisa and INFN Pisa, I-56126 Pisa, Italy)
- P. Munar-Adrover(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- P. Temnikov(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- P. Vogler(ETH Zurich CH-8093 Zurich, Switzerland)
- R. J. García López(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- R. López-Coto(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- R. Mirzoyan(Max-Planck-Institut für Physik D-80805 München, Germany)
- R. Orito(Japanese MAGIC Consortium KEK, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, ICRR, The University of Tokyo, Japan)
- R. Paoletti(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- R. Reinthal(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- R. Zanin(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- S. Ansoldi(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- S. Bonnefoy(Universidad Complutense E-28040 Madrid, Spain)
- S. Buson(Università di Padova and INFN I-35131 Padova, Italy)
- S. Covino(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- S. Einecke(Technische Universität Dortmund D-44221 Dortmund, Germany)
- S. Lombardi(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- S. N. Shore(Università di Pisa and INFN Pisa, I-56126 Pisa, Italy)
- S. Paiano(Università di Padova and INFN I-35131 Padova, Italy)
- S. R. Gozzini(Deutsches Elektronen-Synchrotron)
- T. Bretz(Universität Würzburg D-97074 Würzburg, Germany)
- T. Hovatta(Aalto University Metsähovi Radio Observatory Metsähovintie 114, FI-02540 Kylmälä, Finland)
- T. Saito(Japanese MAGIC Consortium KEK, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, ICRR, The University of Tokyo, Japan)
- T. Schweizer(Max-Planck-Institut für Physik D-80805 München, Germany)
- T. Steinbring(Universität Würzburg D-97074 Würzburg, Germany)
- T. Terzić(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- T. Toyama(Max-Planck-Institut für Physik D-80805 München, Germany)
- U. Menzel(Max-Planck-Institut für Physik D-80805 München, Germany)
- V. Kadenius(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- V. Neustroev(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- V. Scalzotto(Università di Padova and INFN I-35131 Padova, Italy)
- V. Scapin(Universidad Complutense E-28040 Madrid, Spain)
- W. Bednarek(University of Łódź PL-90236 Lodz, Poland)
- W. Idec(University of Łódź PL-90236 Lodz, Poland)
- W. Max-Moerbeck(National Radio Astronomy Observatory P.O. Box 0, Socorro, NM 87801, USA)
- W. Rhode(Technische Universität Dortmund D-44221 Dortmund, Germany)
- X. Paredes-Fortuny(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- Y. Hanabata(Japanese MAGIC Consortium KEK, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, ICRR, The University of Tokyo, Japan)
- Y. Konno(Japanese MAGIC Consortium KEK, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, ICRR, The University of Tokyo, Japan)
- Publication venue
- Publication date
- Field of study
The high-frequency-peaked BL Lac (HBL) 1ES 0806+524 (z = 0.138) was
discovered in VHE γ rays in 2008. Until now, the broad-band spectrum of
1ES 0806+524 has been only poorly characterized, in particular at high
energies. We analysed multiwavelength observations from γ rays to radio
performed from 2011 January to March, which were triggered by the high activity
detected at optical frequencies. These observations constitute the most precise
determination of the broad-band emission of 1ES 0806+524 to date. The
stereoscopic MAGIC observations yielded a γ-ray signal above 250 GeV of
(3.7±0.7) per cent of the Crab Nebula flux with a statistical
significance of 9.9 σ. The multiwavelength observations showed
significant variability in essentially all energy bands, including a VHE
γ-ray flare that lasted less than one night, which provided
unprecedented evidence for short-term variability in 1ES 0806+524. The spectrum
of this flare is well described by a power law with a photon index of 2.97±0.29 between ∼150 GeV and 1 TeV and an integral flux of (9.3±1.9)
per cent of the Crab Nebula flux above 250 GeV. The spectrum during the
non-flaring VHE activity is compatible with the only available VHE observation
performed in 2008 with VERITAS when the source was in a low optical state. The
broad-band spectral energy distribution can be described with a one-zone
Synchrotron Self Compton model with parameters typical for HBLs, indicating
that 1ES 0806+524 is not substantially different from the HBLs previously
detected
Very-high-energy γ-ray observations of novae and dwarf novae with the MAGIC telescopes
- Author
- A. Babic(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- A. Biland(ETH Zurich CH-8093 Zurich, Switzerland)
- A. Carosi(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- A. Chatterjee(Saha Institute of Nuclear Physics 1/AF Bidhannagar, Salt Lake, Sector-1, Kolkata 700064, India)
- A. De Angelis(Università di Padova and INFN I-35131 Padova, Italy)
- A. Fernández-Barral(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- A. González Muñoz(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- A. La Barbera(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- A. López-Oramas(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- A. Moralejo(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- A. Niedzwiecki(University of Łódź PL-90236 Lodz, Poland)
- A. Overkemping(Technische Universität Dortmund D-44221 Dortmund, Germany)
- A. Sillanpää(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- A. Stamerra(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- A. Treves(Università dell'Insubria and INFN Milano Bicocca Como, I-22100 Como, Italy)
- B. Banerjee(Saha Institute of Nuclear Physics 1/AF Bidhannagar, Salt Lake, Sector-1, Kolkata 700064, India)
- B. Biasuzzi(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- B. De Lotto(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- B. Marcote(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- C. Delgado Mendez(Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, E-28040 Madrid, Spain)
- C. Fruck(Max-Planck-Institut für Physik D-80805 München, Germany)
- C. Schultz(Università di Padova and INFN I-35131 Padova, Italy)
- D. Dominis Prester(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- D. Dorner(Universität Würzburg D-97074 Würzburg, Germany)
- D. Eisenacher Glawion(Universität Würzburg D-97074 Würzburg, Germany)
- D. Elsaesser(Universität Würzburg D-97074 Würzburg, Germany)
- D. F. Torres(ICREA and Institute of Space Sciences E-08193 Barcelona, Spain)
- D. Fidalgo(Universidad Complutense E-28040 Madrid, Spain)
- D. Galindo(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- D. Garrido Terrats(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain)
- D. Guberman(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- D. Hrupec(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- D. Lelas(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- D. Mazin(Max-Planck-Institut für Physik D-80805 München, Germany)
- D. Nakajima(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- D. Paneque(Max-Planck-Institut für Physik D-80805 München, Germany)
- D. Sobczynska(University of Łódź PL-90236 Lodz, Poland)
- D. Tescaro(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- E. Bernardini(Deutsches Elektronen-Synchrotron)
- E. Carmona(Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, E-28040 Madrid, Spain)
- E. Colombo(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- E. de Oña Wilhelmi(Institute of Space Sciences E-08193 Barcelona, Spain)
- E. Hays(NASA Goddard Space Flight Center Greenbelt, MD 20771, USA)
- E. Lindfors(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- E. Lorenz(Max-Planck-Institut für Physik D-80805 München, Germany)
- E. Prandini(ETH Zurich CH-8093 Zurich, Switzerland)
- F. Borracci(Max-Planck-Institut für Physik D-80805 München, Germany)
- F. Dazzi(Max-Planck-Institut für Physik D-80805 München, Germany)
- F. Di Pierro(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- F. Longo(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- F. Tavecchio(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- G. Bonnoli(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- G. De Caneva(Deutsches Elektronen-Synchrotron)
- G. Hughes(ETH Zurich CH-8093 Zurich, Switzerland)
- G. Maneva(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- H. Kellermann(Max-Planck-Institut für Physik D-80805 München, Germany)
- H. Kubo(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- H. Takami(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- I. Puljak(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- I. Snidaric(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- I. Vovk(Max-Planck-Institut für Physik D-80805 München, Germany)
- J. A. Barrio(Universidad Complutense E-28040 Madrid, Spain)
- J. Becerra González(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- J. Cortina(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- J. Herrera(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- J. Hose(Max-Planck-Institut für Physik D-80805 München, Germany)
- J. Kushida(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- J. L. Contreras(Universidad Complutense E-28040 Madrid, Spain)
- J. M. Miranda(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- J. M. Paredes(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- J. Palacio(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- J. Poutanen(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- J. Rico(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- J. Rodriguez Garcia(Max-Planck-Institut für Physik D-80805 München, Germany)
- J. Sitarek(University of Łódź PL-90236 Lodz, Poland)
- J. Thaele(Technische Universität Dortmund D-44221 Dortmund, Germany)
- K. Frantzen(Technische Universität Dortmund D-44221 Dortmund, Germany)
- K. Kodani(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- K. Mallot(Deutsches Elektronen-Synchrotron)
- K. Mannheim(Universität Würzburg D-97074 Würzburg, Germany)
- K. Nilsson(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- K. Nishijima(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- K. Noda(Max-Planck-Institut für Physik D-80805 München, Germany)
- K. Saito(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- K. Satalecka(Universidad Complutense E-28040 Madrid, Spain)
- L. A. Antonelli(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- L. Font(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain)
- L. Maraschi(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- L. Takalo(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- M. Doro(Università di Padova and INFN I-35131 Padova, Italy)
- M. Garczarczyk(Deutsches Elektronen-Synchrotron)
- M. Gaug(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain)
- M. Hayashida(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- M. L. Ahnen(ETH Zurich CH-8093 Zurich, Switzerland)
- M. López(Universidad Complutense E-28040 Madrid, Spain)
- M. Makariev(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- M. Manganaro(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- M. Mariotti(Università di Padova and INFN I-35131 Padova, Italy)
- M. Martínez(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- M. Nievas Rosillo(Universidad Complutense E-28040 Madrid, Spain)
- M. Palatiello(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- M. Persic(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- M. Ribó(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- M. Strzys(Max-Planck-Institut für Physik D-80805 München, Germany)
- M. Teshima(Max-Planck-Institut für Physik D-80805 München, Germany)
- M. V. Fonseca(Universidad Complutense E-28040 Madrid, Spain)
- M. Will(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- MAGIC Collaboration
- N. Godinović(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- N. Lewandowska(Universität Würzburg D-97074 Würzburg, Germany)
- O. Blanch(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- P. Antoranz(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- P. Bangale(Max-Planck-Institut für Physik D-80805 München, Germany)
- P. Colin(Max-Planck-Institut für Physik D-80805 München, Germany)
- P. Da Vela(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- P. G. Prada Moroni(Università di Pisa and INFN Pisa, I-56126 Pisa, Italy)
- P. Giammaria(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- P. Majumdar(Saha Institute of Nuclear Physics 1/AF Bidhannagar, Salt Lake, Sector-1, Kolkata 700064, India)
- P. Temnikov(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- R. Clavero(Max-Planck-Institut für Physik D-80805 München, Germany)
- R. Desiante(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- R. J. García López(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- R. López-Coto(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- R. Mirzoyan(Max-Planck-Institut für Physik D-80805 München, Germany)
- R. Orito(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- R. Paoletti(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- R. Reinthal(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- R. Zanin(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- S. Ansoldi(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- S. Bonnefoy(Universidad Complutense E-28040 Madrid, Spain)
- S. Covino(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- S. Einecke(Technische Universität Dortmund D-44221 Dortmund, Germany)
- S. Lombardi(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- S. Paiano(Università di Padova and INFN I-35131 Padova, Italy)
- T. Bretz(Universität Würzburg D-97074 Würzburg, Germany)
- T. Saito(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- T. Schweizer(Max-Planck-Institut für Physik D-80805 München, Germany)
- T. Steinbring(Universität Würzburg D-97074 Würzburg, Germany)
- T. Terzić(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- T. Toyama(Max-Planck-Institut für Physik D-80805 München, Germany)
- U. Barres de Almeida(Max-Planck-Institut für Physik D-80805 München, Germany)
- U. Menzel(Max-Planck-Institut für Physik D-80805 München, Germany)
- V. Neustroev(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- V. Scapin(Universidad Complutense E-28040 Madrid, Spain)
- V. Verguilov(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- W. Bednarek(University of Łódź PL-90236 Lodz, Poland)
- W. Idec(University of Łódź PL-90236 Lodz, Poland)
- W. Rhode(Technische Universität Dortmund D-44221 Dortmund, Germany)
- X. Paredes-Fortuny(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- Y. Hanabata(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- Y. Konno(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- Publication venue
- Publication date
- Field of study
Context. In the last five years the Fermi Large Area Telescope (LAT)
instrument detected GeV {\gamma}-ray emission from five novae. The GeV emission
can be interpreted in terms of an inverse Compton process of electrons
accelerated in a shock. In this case it is expected that protons in the same
conditions can be accelerated to much higher energies. Consequently they may
produce a second component in the {\gamma}-ray spectrum at TeV energies. Aims.
We aim to explore the very-high-energy domain to search for {\gamma}-ray
emission above 50 GeV and to shed light on the acceleration process of leptons
and hadrons in nova explosions. Methods. We have performed observations with
the MAGIC telescopes of the classical nova V339 Del shortly after the 2013
outburst, triggered by optical and subsequent GeV {\gamma}-ray detec- tions. We
also briefly report on VHE observations of the symbiotic nova YY Her and the
dwarf nova ASASSN-13ax. We complement the TeV MAGIC observations with the
analysis of con- temporaneous Fermi-LAT data of the sources. The TeV and GeV
observations are compared in order to evaluate the acceleration parameters for
leptons and hadrons. Results. No significant TeV emission was found from the
studied sources. We computed upper limits on the spectrum and night-by-night
flux. The combined GeV and TeV observations of V339 Del limit the ratio of
proton to electron luminosities to Lp<~0.15 Le
Teraelectronvolt pulsed emission from the Crab pulsar detected by MAGIC
- Author
- A. Babic(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka, University of Split and University of Zagreb, Croatia)
- A. Biland(ETH Zurich CH-8093 Zurich, Switzerland)
- A. Carosi(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- A. Chatterjee(Saha Institute of Nuclear Physics 1/AF Bidhannagar, Salt Lake, Sector-1, Kolkata 700064, India)
- A. De Angelis(Università di Padova and INFN I-35131 Padova, Italy)
- A. Domínguez(Universidad Complutense E-28040 Madrid, Spain)
- A. Fernández-Barral(Institut de Fisica d'Altes Energies)
- A. González Muñoz(Institut de Fisica d'Altes Energies)
- A. Hahn(Max-Planck-Institut für Physik D-80805 München, Germany)
- A. La Barbera(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- A. Moralejo(Institut de Fisica d'Altes Energies)
- A. Niedzwiecki(University of Łódź PL-90236 Lodz, Poland)
- A. Overkemping(Technische Universität Dortmund D-44221 Dortmund, Germany)
- A. Sillanpää(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- A. Stamerra(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- A. Treves(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- B. Banerjee(Saha Institute of Nuclear Physics 1/AF Bidhannagar, Salt Lake, Sector-1, Kolkata 700064, India)
- B. Biasuzzi(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- B. De Lotto(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- B. Marcote(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- C. Delgado Mendez(Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, E-28040 Madrid, Spain)
- C. Fruck(Max-Planck-Institut für Physik D-80805 München, Germany)
- C. Schultz(Università di Padova and INFN I-35131 Padova, Italy)
- D. Dominis Prester(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka, University of Split and University of Zagreb, Croatia)
- D. Dorner(Universität Würzburg D-97074 Würzburg, Germany)
- D. Eisenacher Glawion(Universität Würzburg D-97074 Würzburg, Germany)
- D. Elsaesser(Universität Würzburg D-97074 Würzburg, Germany)
- D. F. Torres(ICREA and Institute for Space Sciences)
- D. Fidalgo(Universidad Complutense E-28040 Madrid, Spain)
- D. Galindo(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- D. Garrido Terrats(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain)
- D. Gora(Deutsches Elektronen-Synchrotron)
- D. Guberman(Institut de Fisica d'Altes Energies)
- D. Hadasch(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- D. Hrupec(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka, University of Split and University of Zagreb, Croatia)
- D. Lelas(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka, University of Split and University of Zagreb, Croatia)
- D. Mazin(Max-Planck-Institut für Physik D-80805 München, Germany)
- D. Nakajima(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- D. Paneque(Max-Planck-Institut für Physik D-80805 München, Germany)
- D. Sobczynska(University of Łódź PL-90236 Lodz, Poland)
- D. Tescaro(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain, Universidad de La Laguna, Dpto. Astrofísica, E-38206 La Laguna, Tenerife, Spain)
- E. Bernardini(Deutsches Elektronen-Synchrotron)
- E. Carmona(Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, E-28040 Madrid, Spain)
- E. Colombo(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain, Universidad de La Laguna, Dpto. Astrofísica, E-38206 La Laguna, Tenerife, Spain)
- E. de Oña Wilhelmi(Institute for Space Sciences)
- E. Lindfors(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- E. Lorenz(Max-Planck-Institut für Physik D-80805 München, Germany)
- E. Moretti(Max-Planck-Institut für Physik D-80805 München, Germany)
- E. Prandini(ETH Zurich CH-8093 Zurich, Switzerland)
- F. Borracci(Max-Planck-Institut für Physik D-80805 München, Germany)
- F. Dazzi(Max-Planck-Institut für Physik D-80805 München, Germany)
- F. Di Pierro(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- F. Longo(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- F. Tavecchio(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- G. Bonnoli(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- G. Hughes(ETH Zurich CH-8093 Zurich, Switzerland)
- G. Maneva(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- G. Pedaletti(Deutsches Elektronen-Synchrotron)
- H. Kubo(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- H. Takami(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- I. Puljak(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka, University of Split and University of Zagreb, Croatia)
- I. Snidaric(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka, University of Split and University of Zagreb, Croatia)
- I. Vovk(Max-Planck-Institut für Physik D-80805 München, Germany)
- J. A. Barrio(Universidad Complutense E-28040 Madrid, Spain)
- J. Becerra González(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain, Universidad de La Laguna, Dpto. Astrofísica, E-38206 La Laguna, Tenerife, Spain)
- J. Cortina(Institut de Fisica d'Altes Energies)
- J. E. Ward(Institut de Fisica d'Altes Energies)
- J. Herrera(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain, Universidad de La Laguna, Dpto. Astrofísica, E-38206 La Laguna, Tenerife, Spain)
- J. Hose(Max-Planck-Institut für Physik D-80805 München, Germany)
- J. Kushida(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- J. L. Contreras(Universidad Complutense E-28040 Madrid, Spain)
- J. M. Miranda(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- J. M. Paredes(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- J. Palacio(Institut de Fisica d'Altes Energies)
- J. Poutanen(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- J. Rico(Institut de Fisica d'Altes Energies)
- J. Rodriguez Garcia(Max-Planck-Institut für Physik D-80805 München, Germany)
- J. Sitarek(University of Łódź PL-90236 Lodz, Poland)
- J. Thaele(Technische Universität Dortmund D-44221 Dortmund, Germany)
- K. Frantzen(Technische Universität Dortmund D-44221 Dortmund, Germany)
- K. Kodani(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- K. Mallot(Deutsches Elektronen-Synchrotron)
- K. Mannheim(Universität Würzburg D-97074 Würzburg, Germany)
- K. Nilsson(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- K. Nishijima(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- K. Noda(Max-Planck-Institut für Physik D-80805 München, Germany)
- K. Satalecka(Universidad Complutense E-28040 Madrid, Spain)
- L. A. Antonelli(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- L. Font(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain)
- L. Maraschi(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- L. Takalo(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- M. Doro(Università di Padova and INFN I-35131 Padova, Italy)
- M. Garczarczyk(Deutsches Elektronen-Synchrotron)
- M. Gaug(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain)
- M. H. Wu(Institute for Space Sciences)
- M. Hayashida(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- M. L. Ahnen(ETH Zurich CH-8093 Zurich, Switzerland)
- M. López(Universidad Complutense E-28040 Madrid, Spain)
- M. Makariev(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- M. Manganaro(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain, Universidad de La Laguna, Dpto. Astrofísica, E-38206 La Laguna, Tenerife, Spain)
- M. Mariotti(Università di Padova and INFN I-35131 Padova, Italy)
- M. Martínez(Institut de Fisica d'Altes Energies)
- M. Nievas Rosillo(Universidad Complutense E-28040 Madrid, Spain)
- M. Palatiello(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- M. Persic(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- M. Ribó(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- M. Strzys(Max-Planck-Institut für Physik D-80805 München, Germany)
- M. Teshima(Max-Planck-Institut für Physik D-80805 München, Germany)
- M. V. Fonseca(Universidad Complutense E-28040 Madrid, Spain)
- M. Will(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain, Universidad de La Laguna, Dpto. Astrofísica, E-38206 La Laguna, Tenerife, Spain)
- MAGIC Collaboration
- N. Godinović(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka, University of Split and University of Zagreb, Croatia)
- O. Blanch(Institut de Fisica d'Altes Energies)
- P. Antoranz(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- P. Bangale(Max-Planck-Institut für Physik D-80805 München, Germany)
- P. Colin(Max-Planck-Institut für Physik D-80805 München, Germany)
- P. Da Vela(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- P. G. Prada Moroni(Università di Pisa and INFN Pisa, I-56126 Pisa, Italy)
- P. Giammaria(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- P. Majumdar(Saha Institute of Nuclear Physics 1/AF Bidhannagar, Salt Lake, Sector-1, Kolkata 700064, India)
- P. Temnikov(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- R. Clavero(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain, Universidad de La Laguna, Dpto. Astrofísica, E-38206 La Laguna, Tenerife, Spain)
- R. J. García López(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain, Universidad de La Laguna, Dpto. Astrofísica, E-38206 La Laguna, Tenerife, Spain)
- R. López-Coto(Institut de Fisica d'Altes Energies)
- R. Mirzoyan(Max-Planck-Institut für Physik D-80805 München, Germany)
- R. Orito(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- R. Paoletti(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- R. Zanin(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- S. Ansoldi(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- S. Bonnefoy(Universidad Complutense E-28040 Madrid, Spain)
- S. Buson(Università di Padova and INFN I-35131 Padova, Italy)
- S. Covino(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- S. Einecke(Technische Universität Dortmund D-44221 Dortmund, Germany)
- S. Lombardi(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- S. N. Shore(Università di Pisa and INFN Pisa, I-56126 Pisa, Italy)
- S. Paiano(Università di Padova and INFN I-35131 Padova, Italy)
- T. Bretz(Universität Würzburg D-97074 Würzburg, Germany)
- T. Saito(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- T. Schweizer(Max-Planck-Institut für Physik D-80805 München, Germany)
- T. Steinbring(Universität Würzburg D-97074 Würzburg, Germany)
- T. Terzić(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka, University of Split and University of Zagreb, Croatia)
- T. Toyama(Max-Planck-Institut für Physik D-80805 München, Germany)
- U. Barres de Almeida(Max-Planck-Institut für Physik D-80805 München, Germany)
- U. Menzel(Max-Planck-Institut für Physik D-80805 München, Germany)
- V. Neustroev(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- V. Verguilov(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- W. Bednarek(University of Łódź PL-90236 Lodz, Poland)
- W. Idec(University of Łódź PL-90236 Lodz, Poland)
- W. Rhode(Technische Universität Dortmund D-44221 Dortmund, Germany)
- X. Paredes-Fortuny(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- Y. Hanabata(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- Y. Konno(Japanese MAGIC Consortium ICRR, The University of Tokyo, Department of Physics and Hakubi Center, Kyoto University, Tokai University, The University of Tokushima, KEK, Japan)
- Publication venue
- Publication date
- Field of study
Aims: To investigate the extension of the very-high-energy spectral tail of
the Crab pulsar at energies above 400 GeV. Methods: We analyzed ∼320 hours
of good quality data of Crab with the MAGIC telescope, obtained from February
2007 until April 2014. Results: We report the most energetic pulsed emission
ever detected from the Crab pulsar reaching up to 1.5 TeV. The pulse profile
shows two narrow peaks synchronized with the ones measured in the GeV energy
range. The spectra of the two peaks follow two different power-law functions
from 70 GeV up to 1.5 TeV and connect smoothly with the spectra measured above
10 GeV by the Large Area Telescope (LAT) on board of the Fermi satellite. When
making a joint fit of the LAT and MAGIC data, above 10 GeV, the photon indices
of the spectra differ by 0.5±0.1. Conclusions: We measured with the MAGIC
telescopes the most energetic pulsed photons from a pulsar to date. Such TeV
pulsed photons require a parent population of electrons with a Lorentz factor
of at least 5×106. These results strongly suggest IC scattering off
low energy photons as the emission mechanism and a gamma-ray production region
in the vicinity of the light cylinder
Unprecedented study of the broadband emission of Mrk 421 during flaring activity in March 2010
- Author
- :(Physics Department McGill University, Montreal, Canada)
- :(Università di Padova and INFN Padova, Italy)
- A. Archer(Department of Physics Washington University, St. Louis, USA)
- A. Babic(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- A. Biland(ETH Zurich Zurich, Switzerland)
- A. Boller(ETH Zurich Zurich, Switzerland)
- A. C. Rovero(Instituto de Astronomia y Fisica del Espacio Ciudad Autónoma de Buenos Aires, Argentina)
- A. C. S. Readhead(Cahill Center for Astronomy and Astrophysics California Institute of Technology, Pasadena, USA)
- A. C. Sadun(Department of Physics University of Colorado Denver, Denver, Colorado)
- A. Carosi(INAF National Institute for Astrophysics Rome, Italy)
- A. Cesarini(Department of Physics University of Trento, Trento, Italy)
- A. De Angelis(Università di Udine and INFN Trieste, Udine, Italy)
- A. E. Wehrle(Space Science Institute Boulder, USA)
- A. Falcone(Department of Astronomy and Astrophysics Pennsylvania State University, University Park, USA)
- A. Furniss(Santa Cruz Institute for Particle Physics and Department of Physics University of California, Santa Cruz, USA)
- A. González Muñoz(IFAE Campus UAB, Bellaterra, Spain)
- A. La Barbera(INAF National Institute for Astrophysics Rome, Italy)
- A. Lähteenmäki(Aalto University Metsähovi Radio Observatory Kylmälä, Finland)
- A. López-Oramas(IFAE Campus UAB, Bellaterra, Spain)
- A. McCann(Kavli Institute for Cosmological Physics University of Chicago, Chicago, USA)
- A. Moralejo(IFAE Campus UAB, Bellaterra, Spain)
- A. N. Otte(School of Physics and Center for Relativistic Astrophysics Georgia Institute of Technology, Atlanta, USA)
- A. Niedzwiecki(University of Łód Lodz, Poland)
- A. Overkemping(Technische Universität Dortmund Dortmund, Germany)
- A. P. Marscher(Institute for Astrophysical Research Boston University, Boston, USA)
- A. Pichel(Instituto de Astronomia y Fisica del Espacio Ciudad Autónoma de Buenos Aires, Argentina)
- A. Popkow(Department of Physics and Astronomy University of California, Los Angeles, USA)
- A. Sillanpää(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- A. Stamerra(INAF National Institute for Astrophysics Rome, Italy)
- A. Treves(Università dell'Insubria and INFN Milano Bicocca Como, Italy)
- A. Varlotta(Department of Physics and Astronomy Purdue University, West Lafayette, USA)
- A. Wilhelm(Institute of Physics and Astronomy University of Potsdam, Potsdam-Golm, Germany)
- B. Biasuzzi(Università di Udine and INFN Trieste, Udine, Italy)
- B. De Lotto(Università di Udine and INFN Trieste, Udine, Italy)
- B. Jordan(School of Cosmic Physics Dublin Institute for Advanced Studies, Belfield, Dublin 2, Ireland)
- B. Marcote(Universitat de Barcelona ICC, IEEC-UB, Barcelona, Spain)
- B. McBreen(School of Physics University College Dublin, Dublin, Ireland)
- B. Steinke(Max-Planck-Institut für Physik München, Germany)
- C. A. Johnson(Santa Cruz Institute for Particle Physics and Department of Physics University of California, Santa Cruz, USA)
- C. Delgado Mendez(Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, Madrid, Spain)
- C. Fruck(Max-Planck-Institut für Physik München, Germany)
- C. Raiteri(INAF Osservatorio Astronomico di Torino, Pino Torinese, Italy)
- C. Schultz(Università di Padova and INFN Padova, Italy)
- D. A. Morozova(Astron. Inst. St.-Petersburg State University, Russia)
- D. A. Williams(Santa Cruz Institute for Particle Physics and Department of Physics University of California, Santa Cruz, USA)
- D. Dominis Prester(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- D. Dorner(Universität Würzburg Würzburg, Germany)
- D. Eisenacher(Universität Würzburg Würzburg, Germany)
- D. Elsaesser(Universität Würzburg Würzburg, Germany)
- D. F. Torres(ICREA and Institute of Space Sciences Barcelona, Spain)
- D. Galindo(Universitat de Barcelona ICC, IEEC-UB, Barcelona, Spain)
- D. Garrido Terrats(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, Bellaterra, Spain)
- D. Hadasch(Institute of Space Sciences Barcelona, Spain)
- D. Hildebrand(ETH Zurich Zurich, Switzerland)
- D. Hrupec(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- D. Kieda(Department of Physics and Astronomy University of Utah, Salt Lake City, USA)
- D. Lelas(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- D. Mazin(Max-Planck-Institut für Physik München, Germany)
- D. Nakajima(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- D. Paneque(Max-Planck-Institut für Physik München, Germany)
- D. Sobczynska(University of Łód Lodz, Poland)
- D. Staszak(Physics Department McGill University, Montreal, Canada)
- D. Tescaro(Inst. de Astrofísica de Canarias Tenerife, Spain)
- E. Bernardini(Deutsches Elektronen-Synchrotron)
- E. Carmona(Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, Madrid, Spain)
- E. Collins-Hughes(School of Physics University College Dublin, Dublin, Ireland)
- E. Colombo(Inst. de Astrofísica de Canarias Tenerife, Spain)
- E. de Oña Wilhelmi(Institute of Space Sciences Barcelona, Spain)
- E. G. Larionova(Astron. Inst. St.-Petersburg State University, Russia)
- E. Koptelova(Graduate Institute of Astronomy National Central University, Jhongli, Taiwan)
- E. Lindfors(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- E. Lorenz(Max-Planck-Institut für Physik München, Germany)
- E. Prandini(ETH Zurich Zurich, Switzerland)
- E. Pueschel(School of Physics University College Dublin, Dublin, Ireland)
- E. Roache(Fred Lawrence Whipple Observatory Harvard-Smithsonian Center for Astrophysics, Amado, USA)
- External Collaborators(Università di Padova and INFN Padova, Italy)
- F. Borracci(Max-Planck-Institut für Physik München, Germany)
- F. Dazzi(Max-Planck-Institut für Physik München, Germany)
- F. Spanier(Universität Würzburg Würzburg, Germany)
- F. Tavecchio(INAF National Institute for Astrophysics Rome, Italy)
- G. Bonnoli(INAF National Institute for Astrophysics Rome, Italy)
- G. De Caneva(Deutsches Elektronen-Synchrotron)
- G. Gyuk(Astronomy Department Adler Planetarium and Astronomy Museum, Chicago, USA)
- G. H. Gillanders(School of Physics National University of Ireland Galway, Galway, Ireland)
- G. H. Sembroski(Department of Physics and Astronomy Purdue University, West Lafayette, USA)
- G. Hughes(Deutsches Elektronen-Synchrotron)
- G. Maneva(Inst. for Nucl. Research and Nucl. Energy Sofia, Bulgaria)
- G. N. Kimeridze(Abastumani Observatory Mt. Kanobili, Georgia)
- G. T. Richards(School of Physics and Center for Relativistic Astrophysics Georgia Institute of Technology, Atlanta, USA)
- H. C. Lin(Graduate Institute of Astronomy National Central University, Jhongli, Taiwan)
- H. D. Aller(Department of Astronomy University of Michigan, Ann Arbor, USA)
- H. Kellermann(Max-Planck-Institut für Physik München, Germany)
- H. Kubo(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- H. Prokoph(Deutsches Elektronen-Synchrotron)
- H. Takami(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- I. Lozano(Universidad Complutense Madrid, Spain)
- I. Puljak(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- I. S. Troitsky(Astron. Inst. St.-Petersburg State University, Russia)
- I. Snidaric(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- I. Telezhinsky(Institute of Physics and Astronomy University of Potsdam, Potsdam-Golm, Germany)
- J. A. Barrio(Universidad Complutense Madrid, Spain)
- J. A. Ros(Agrupació Astronòmica de Sabadell Spain)
- J. Aleksić(IFAE Campus UAB, Bellaterra, Spain)
- J. Becerra González(Inst. de Astrofísica de Canarias Tenerife, Spain)
- J. Biteau(Santa Cruz Institute for Particle Physics and Department of Physics University of California, Santa Cruz, USA)
- J. Cortina(IFAE Campus UAB, Bellaterra, Spain)
- J. D. Eisch(Department of Physics and Astronomy Iowa State University, Ames, USA)
- J. Finke(Space Science Division Naval Research Laboratory, Washington DC, USA)
- J. H. Buckley(Department of Physics Washington University, St. Louis, USA)
- J. Herrera(Inst. de Astrofísica de Canarias Tenerife, Spain)
- J. Holder(Department of Physics and Astronomy and the Bartol Research Institute University of Delaware, Newark, USA)
- J. Hose(Max-Planck-Institut für Physik München, Germany)
- J. Krause(Max-Planck-Institut für Physik München, Germany)
- J. Kushida(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- J. L. Contreras(Universidad Complutense Madrid, Spain)
- J. L. Richards(Department of Physics and Astronomy Purdue University, West Lafayette, USA)
- J. M. Miranda(Università di Siena and INFN Pisa, Siena, Italy)
- J. M. Paredes(Universitat de Barcelona ICC, IEEC-UB, Barcelona, Spain)
- J. Millis(Department of Physics Anderson University, Anderson, USA)
- J. P. Finley(Department of Physics and Astronomy Purdue University, West Lafayette, USA)
- J. Rico(IFAE Campus UAB, Bellaterra, Spain)
- J. Rodriguez Garcia(Max-Planck-Institut für Physik München, Germany)
- J. S. Perkins(NASA Goddard Space Flight Center Greenbelt, USA and Department of Physics and Department of Astronomy, University of Maryland, College Park, USA)
- J. Sitarek(IFAE Campus UAB, Bellaterra, Spain)
- J. Storz(Universität Würzburg Würzburg, Germany)
- J. Thaele(Technische Universität Dortmund Dortmund, Germany)
- J. Tyler(Physics Department McGill University, Montreal, Canada)
- J. V. Tucci(Department of Physics and Astronomy Purdue University, West Lafayette, USA)
- J. W. Moody(Department of Physics and Astronomy Brigham Young University, Provo, Utah)
- K. Berger(Department of Physics and Astronomy and the Bartol Research Institute University of Delaware, Newark, USA)
- K. Frantzen(Technische Universität Dortmund Dortmund, Germany)
- K. Kodani(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- K. Mallot(Deutsches Elektronen-Synchrotron)
- K. Mannheim(Universität Würzburg Würzburg, Germany)
- K. Meagher(School of Physics and Center for Relativistic Astrophysics Georgia Institute of Technology, Atlanta, USA)
- K. Nilsson(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- K. Nishijima(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- K. Noda(Max-Planck-Institut für Physik München, Germany)
- K. Ragan(Physics Department McGill University, Montreal, Canada)
- K. Saito(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- K. Satalecka(Universidad Complutense Madrid, Spain)
- K. Shahinyan(School of Physics and Astronomy University of Minnesota, Minneapolis, USA)
- L. A. Antonelli(INAF National Institute for Astrophysics Rome, Italy)
- L. A. Sigua(Abastumani Observatory Mt. Kanobili, Georgia)
- L. C. Reyes(Physics Department California Polytechnic State University, San Luis Obispo, USA)
- L. Ciupik(Astronomy Department Adler Planetarium and Astronomy Museum, Chicago, USA)
- L. Font(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, Bellaterra, Spain)
- L. Fortson(School of Physics and Astronomy University of Minnesota, Minneapolis, USA)
- L. Maraschi(INAF National Institute for Astrophysics Rome, Italy)
- L. Takalo(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- M. A. Gurwell(Harvard-Smithsonian Center for Astrophysics Cambridge, USA)
- M. Beilicke(Department of Physics Washington University, St. Louis, USA)
- M. Cerruti(Fred Lawrence Whipple Observatory Harvard-Smithsonian Center for Astrophysics, Amado, USA)
- M. Doro(Università di Padova and INFN Padova, Italy)
- M. F. Aller(Department of Astronomy University of Michigan, Ann Arbor, USA)
- M. G. Nikolashvili(Abastumani Observatory Mt. Kanobili, Georgia)
- M. Garczarczyk(Deutsches Elektronen-Synchrotron)
- M. Gaug(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, Bellaterra, Spain)
- M. Hayashida(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- M. J. Lang(School of Physics National University of Ireland Galway, Galway, Ireland)
- M. Kertzman(Department of Physics and Astronomy DePauw University, Greencastle, USA)
- M. L. Knoetig(ETH Zurich Zurich, Switzerland)
- M. López(Universidad Complutense Madrid, Spain)
- M. Makariev(Inst. for Nucl. Research and Nucl. Energy Sofia, Bulgaria)
- M. Mariotti(Università di Padova and INFN Padova, Italy)
- M. Martínez(IFAE Campus UAB, Bellaterra, Spain)
- M. Palatiello(Università di Udine and INFN Trieste, Udine, Italy)
- M. Perri(INAF National Institute for Astrophysics Rome, Italy)
- M. Persic(Università di Udine and INFN Trieste, Udine, Italy)
- M. Pohl(Institute of Physics and Astronomy University of Potsdam, Potsdam-Golm, Germany)
- M. Ribó(Universitat de Barcelona ICC, IEEC-UB, Barcelona, Spain)
- M. Strzys(Max-Planck-Institut für Physik München, Germany)
- M. Teshima(Max-Planck-Institut für Physik München, Germany)
- M. Tornikoski(Aalto University Metsähovi Radio Observatory Kylmälä, Finland)
- M. Uellenbeck(Technische Universität Dortmund Dortmund, Germany)
- M. V. Fonseca(Universidad Complutense Madrid, Spain)
- M. Villata(INAF Osservatorio Astronomico di Torino, Pino Torinese, Italy)
- N. Galante(Fred Lawrence Whipple Observatory Harvard-Smithsonian Center for Astrophysics, Amado, USA)
- N. Godinović(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- N. Håkansson(Institute of Physics and Astronomy University of Potsdam, Potsdam-Golm, Germany)
- N. Lewandowska(Universität Würzburg Würzburg, Germany)
- N. Mankuzhiyil(Università di Udine and INFN Trieste, Udine, Italy)
- O. Blanch(IFAE Campus UAB, Bellaterra, Spain)
- O. M. Kurtanidze(Abastumani Observatory Mt. Kanobili, Georgia)
- O. Tibolla(Universität Würzburg Würzburg, Germany)
- P. Antoranz(Università di Siena and INFN Pisa, Siena, Italy)
- P. Bangale(Max-Planck-Institut für Physik München, Germany)
- P. Colin(Max-Planck-Institut für Physik München, Germany)
- P. Da Vela(Università di Siena and INFN Pisa, Siena, Italy)
- P. Fortin(Fred Lawrence Whipple Observatory Harvard-Smithsonian Center for Astrophysics, Amado, USA)
- P. G. Prada Moroni(Università di Pisa and INFN Pisa, Pisa, Italy)
- P. Kaaret(Department of Physics and Astronomy University of Iowa, Van Allen Hall, Iowa City, USA)
- P. Kar(Department of Physics and Astronomy University of Utah, Salt Lake City, USA)
- P. Moriarty(School of Physics National University of Ireland Galway, Galway, Ireland)
- P. Munar-Adrover(Universitat de Barcelona ICC, IEEC-UB, Barcelona, Spain)
- P. S. Smith(Steward Observatory University of Arizona, Tucson, USA)
- P. T. Reynolds(Department of Applied Physics and Instrumentation Cork Institute of Technology, Bishopstown, Cork, Ireland)
- P. Temnikov(Inst. for Nucl. Research and Nucl. Energy Sofia, Bulgaria)
- P. Vogler(ETH Zurich Zurich, Switzerland)
- Q. Feng(Department of Physics and Astronomy Purdue University, West Lafayette, USA)
- R. A. Ong(Department of Physics and Astronomy University of California, Los Angeles, USA)
- R. Bird(School of Physics University College Dublin, Dublin, Ireland)
- R. J. García López(Inst. de Astrofísica de Canarias Tenerife, Spain)
- R. López-Coto(IFAE Campus UAB, Bellaterra, Spain)
- R. Mirzoyan(Max-Planck-Institut für Physik München, Germany)
- R. Orito(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- R. Paoletti(Università di Siena and INFN Pisa, Siena, Italy)
- R. Reinthal(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- R. Welsing(Deutsches Elektronen-Synchrotron)
- R. Zanin(Universitat de Barcelona ICC, IEEC-UB, Barcelona, Spain)
- S. Ansoldi(Università di Udine and INFN Trieste, Udine, Italy)
- S. Archambault(Physics Department McGill University, Montreal, Canada)
- S. Bonnefoy(Universidad Complutense Madrid, Spain)
- S. Buson(Università di Padova and INFN Padova, Italy)
- S. Covino(INAF National Institute for Astrophysics Rome, Italy)
- S. Einecke(Technische Universität Dortmund Dortmund, Germany)
- S. G. Jorstad(Institute for Astrophysical Research Boston University, Boston, USA)
- S. Griffin(Physics Department McGill University, Montreal, Canada)
- S. Lombardi(INAF National Institute for Astrophysics Rome, Italy)
- S. McArthur(Enrico Fermi Institute University of Chicago, Chicago, USA)
- S. N. Shore(Università di Pisa and INFN Pisa, Pisa, Italy)
- S. O. Kurtanidze(Abastumani Observatory Mt. Kanobili, Georgia)
- S. P. Wakely(Enrico Fermi Institute University of Chicago, Chicago, USA)
- S. Paiano(Università di Padova and INFN Padova, Italy)
- S. R. Gozzini(Deutsches Elektronen-Synchrotron)
- S. Rügamer(Universität Würzburg Würzburg, Germany)
- S. Sun(Max-Planck-Institut für Physik München, Germany)
- T. Bretz(Universität Würzburg Würzburg, Germany)
- T. Saito(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- T. Sakamoto(Department of Physics and Mathematics College of Science and Engineering, Aoyama Gakuin University, Chuoku, Japan)
- T. Schweizer(Max-Planck-Institut für Physik München, Germany)
- T. Steinbring(Universität Würzburg Würzburg, Germany)
- T. Terzić(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- T. Toyama(Max-Planck-Institut für Physik München, Germany)
- The MAGIC Collaboration
- The VERITAS Collaboration(Physics Department McGill University, Montreal, Canada)
- U. Barres de Almeida(Max-Planck-Institut für Physik München, Germany)
- U. Menzel(Max-Planck-Institut für Physik München, Germany)
- V. Bugaev(Department of Physics Washington University, St. Louis, USA)
- V. Kadenius(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- V. M. Larionov(Astron. Inst. St.-Petersburg State University, Russia)
- V. Scalzotto(Università di Padova and INFN Padova, Italy)
- V. Scapin(Universidad Complutense Madrid, Spain)
- V. Stamatescu(IFAE Campus UAB, Bellaterra, Spain)
- W. Bednarek(University of Łód Lodz, Poland)
- W. Benbow(Fred Lawrence Whipple Observatory Harvard-Smithsonian Center for Astrophysics, Amado, USA)
- W. Cui(Department of Physics and Astronomy Purdue University, West Lafayette, USA)
- W. Idec(University of Łód Lodz, Poland)
- W. Max-Moerbeck(Cahill Center for Astronomy and Astrophysics California Institute of Technology, Pasadena, USA)
- W. P. Chen(Graduate Institute of Astronomy National Central University, Jhongli, Taiwan)
- W. Rhode(Technische Universität Dortmund Dortmund, Germany)
- X. Chen(Institute of Physics and Astronomy University of Potsdam, Potsdam-Golm, Germany)
- X. Paredes-Fortuny(Universitat de Barcelona ICC, IEEC-UB, Barcelona, Spain)
- Y. Hanabata(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- Y. Konno(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- Publication venue
- Publication date
- Field of study
A flare from the TeV blazar Mrk 421, occurring in March 2010, was observed
for 13 consecutive days from radio to very high energy (VHE, E > 100 GeV)
gamma-rays with MAGIC, VERITAS, Whipple, FermiLAT, MAXI, RXTE, Swift,
GASP-WEBT, and several optical and radio telescopes. We model the day-scale
SEDs with one-zone and two-zone synchrotron self-Compton (SSC) models,
investigate the physical parameters, and evaluate whether the observed
broadband SED variability can be associated to variations in the relativistic
particle population.
Flux variability was remarkable in the X-ray and VHE bands while it was minor
or not significant in the other bands. The one-zone SSC model can describe
reasonably well the SED of each day for the 13 consecutive days. This flaring
activity is also very well described by a two-zone SSC model, where one zone is
responsible for the quiescent emission while the other smaller zone, which is
spatially separated from the first one, contributes to the daily-variable
emission occurring in X-rays and VHE gamma-rays.
Both the one-zone SSC and the two-zone SSC models can describe the daily SEDs
via the variation of only four or five model parameters, under the hypothesis
that the variability is associated mostly to the underlying particle
population. This shows that the particle acceleration and cooling mechanism
producing the radiating particles could be the main one responsible for the
broadband SED variations during the flaring episodes in blazars. The two-zone
SSC model provides a better agreement to the observed SED at the narrow peaks
of the low- and high-energy bumps during the highest activity, although the
reported one-zone SSC model could be further improved by the variation of the
parameters related to the emitting region itself (δ, B and R), in
addition to the parameters related to the particle population
Discovery of VHE gamma-rays from the blazar 1ES 1215+303 with the MAGIC Telescopes and simultaneous multi-wavelength observations
- Author
- A. Berdyugin(Tuorla Observatory University of Turku, Piikkiö, Finland)
- A. Biland(ETH Zurich Zurich, Switzerland)
- A. Boller(ETH Zurich Zurich, Switzerland)
- A. Carosi(INAF National Institute for Astrophysics Rome, Italy)
- A. Cañellas(Universitat de Barcelona)
- A. De Angelis(Università di Udine and INFN Trieste, Udine, Italy)
- A. Diago Ortega(Inst. de Astrofísica de Canarias Tenerife, Spain)
- A. Domínguez(Inst. de Astrofísica de Andalucía)
- A. González Muñoz(IFAE Bellaterra, Spain)
- A. Herrero(Inst. de Astrofísica de Canarias Tenerife, Spain)
- A. La Barbera(INAF National Institute for Astrophysics Rome, Italy)
- A. Lähteenmäki(Aalto University Metsähovi Radio Observatory Metsähovintie, Finland)
- A. López-Oramas(IFAE Bellaterra, Spain)
- A. Moralejo(IFAE Bellaterra, Spain)
- A. Niedzwiecki(University of Łódź Lodz, Poland)
- A. Saggion(Università di Padova and INFN Padova, Italy)
- A. Sillanpää(Tuorla Observatory University of Turku, Piikkiö, Finland)
- A. Stamerra(Università di Siena and INFN Pisa, Italy)
- A. Treves(Università dell'Insubria Como, Como, Italy)
- B. De Lotto(Università di Udine and INFN Trieste, Udine, Italy)
- B. Huber(ETH Zurich Zurich, Switzerland)
- B. Steinke(Max-Planck-Institut für Physik München, Germany)
- C. Delgado Mendez(Inst. de Astrofísica de Canarias Tenerife, Spain)
- C. Fruck(Max-Planck-Institut für Physik München, Germany)
- C. Schultz(Università di Padova and INFN Padova, Italy)
- D. Bastieri(Università di Padova and INFN Padova, Italy)
- D. Borla Tridon(Max-Planck-Institut für Physik München, Germany)
- D. Dominis Prester(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- D. Dorner(ETH Zurich Zurich, Switzerland)
- D. Eisenacher(Universität Würzburg Würzburg, Germany)
- D. Elsaesser(Universität Würzburg Würzburg, Germany)
- D. F. Torres(ICREA Barcelona, Spain)
- D. Ferenc(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- D. Garrido Terrats(Universitat Autònoma de Barcelona Bellaterra, Spain)
- D. Hadasch(Institut de Ciències de l'Espai)
- D. Hildebrand(ETH Zurich Zurich, Switzerland)
- D. Hrupec(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- D. Häfner(Max-Planck-Institut für Physik München, Germany)
- D. Lelas(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- D. Mazin(IFAE Bellaterra, Spain)
- D. Nieto(Universidad Complutense Madrid, Spain)
- D. Paneque(Max-Planck-Institut für Physik München, Germany)
- D. Sobczynska(University of Łódź Lodz, Poland)
- D. Tescaro(Inst. de Astrofísica de Canarias Tenerife, Spain)
- E. A. Alvarez(Universidad Complutense Madrid, Spain)
- E. Bernardini(Deutsches Elektronen-Synchrotron)
- E. Carmona(Max-Planck-Institut für Physik München, Germany)
- E. Colombo(Inst. de Astrofísica de Canarias Tenerife, Spain)
- E. De Cea del Pozo(Institut de Ciències de l'Espai)
- E. Järvelä(Aalto University Metsähovi Radio Observatory Metsähovintie, Finland)
- E. Leonardo(Università di Siena and INFN Pisa, Italy)
- E. Lindfors(Tuorla Observatory University of Turku, Piikkiö, Finland)
- E. Lorenz(Max-Planck-Institut für Physik München, Germany)
- E. Prandini(Università di Padova and INFN Padova, Italy)
- F. Dazzi(Università di Udine and INFN Trieste, Udine, Italy)
- F. Jankowski(Deutsches Elektronen-Synchrotron)
- F. Prada(Inst. de Astrofísica de Andalucía)
- F. Spanier(Universität Würzburg Würzburg, Germany)
- F. Tavecchio(INAF National Institute for Astrophysics Rome, Italy)
- F. Zandanel(Inst. de Astrofísica de Andalucía)
- G. Bonnoli(INAF National Institute for Astrophysics Rome, Italy)
- G. De Caneva(Deutsches Elektronen-Synchrotron)
- G. Giavitto(IFAE Bellaterra, Spain)
- G. Maneva(Inst. for Nucl. Research and Nucl. Energy Sofia, Bulgaria)
- H. Kellermann(Max-Planck-Institut für Physik München, Germany)
- H. Takami(Max-Planck-Institut für Physik München, Germany)
- I. Puerto Gimenez(Inst. de Astrofísica de Canarias Tenerife, Spain)
- I. Puljak(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- I. Reichardt(IFAE Bellaterra, Spain)
- I. Snidaric(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- J. A. Barrio(Universidad Complutense Madrid, Spain)
- J. Aleksić(IFAE Bellaterra, Spain)
- J. Becerra González(Inst. de Astrofísica de Canarias Tenerife, Spain)
- J. Cortina(IFAE Bellaterra, Spain)
- J. Hose(Max-Planck-Institut für Physik München, Germany)
- J. Krause(Max-Planck-Institut für Physik München, Germany)
- J. L. Contreras(Universidad Complutense Madrid, Spain)
- J. M. Miranda(Università di Siena and INFN Pisa, Italy)
- J. M. Paredes(Universitat de Barcelona)
- J. Moldón(Universitat de Barcelona)
- J. Pochon(Inst. de Astrofísica de Canarias Tenerife, Spain)
- J. Rico(ICREA Barcelona, Spain)
- J. Sitarek(IFAE Bellaterra, Spain)
- J. Storz(Universität Würzburg Würzburg, Germany)
- J. Tammi(Aalto University Metsähovi Radio Observatory Metsähovintie, Finland)
- K. Berger(Inst. de Astrofísica de Canarias Tenerife, Spain)
- K. Mannheim(Universität Würzburg Würzburg, Germany)
- K. Nilsson(Tuorla Observatory University of Turku, Piikkiö, Finland)
- K. Saito(Max-Planck-Institut für Physik München, Germany)
- K. Satalecka(Universidad Complutense Madrid, Spain)
- L. A. Antonelli(INAF National Institute for Astrophysics Rome, Italy)
- L. Cossio(Università di Udine and INFN Trieste, Udine, Italy)
- L. Font(Universitat Autònoma de Barcelona Bellaterra, Spain)
- L. Maraschi(INAF National Institute for Astrophysics Rome, Italy)
- L. Takalo(Tuorla Observatory University of Turku, Piikkiö, Finland)
- M. A. Perez-Torres(IFAE Bellaterra, Spain)
- M. Asensio(Universidad Complutense Madrid, Spain)
- M. Backes(Technische Universität Dortmund Dortmund, Germany)
- M. Doert(Technische Universität Dortmund Dortmund, Germany)
- M. Doro(Universitat Autònoma de Barcelona Bellaterra, Spain)
- M. Garczarczyk(Inst. de Astrofísica de Canarias Tenerife, Spain)
- M. López(Universidad Complutense Madrid, Spain)
- M. Makariev(Inst. for Nucl. Research and Nucl. Energy Sofia, Bulgaria)
- M. Mariotti(Università di Padova and INFN Padova, Italy)
- M. Martínez(IFAE Bellaterra, Spain)
- M. Meucci(Università di Siena and INFN Pisa, Italy)
- M. Persic(Università di Udine and INFN Trieste, Udine, Italy)
- M. Pilia(Università dell'Insubria Como, Como, Italy)
- M. Ribó(Universitat de Barcelona)
- M. Salvati(INAF National Institute for Astrophysics Rome, Italy)
- M. Teshima(Max-Planck-Institut für Physik München, Germany)
- M. Uellenbeck(Technische Universität Dortmund Dortmund, Germany)
- M. V. Fonseca(Universidad Complutense Madrid, Spain)
- MAGIC Collaboration
- N. Godinović(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- N. Lewandowska(Universität Würzburg Würzburg, Germany)
- N. Mankuzhiyil(Università di Udine and INFN Trieste, Udine, Italy)
- N. Nowak(Max-Planck-Institut für Physik München, Germany)
- N. Strah(Technische Universität Dortmund Dortmund, Germany)
- O. Blanch(IFAE Bellaterra, Spain)
- O. Tibolla(Universität Würzburg Würzburg, Germany)
- P. Antoranz(Università di Siena and INFN Pisa, Italy)
- P. Colin(Max-Planck-Institut für Physik München, Germany)
- P. Da Vela(Università di Siena and INFN Pisa, Italy)
- P. G. Prada Moroni(Università di Pisa and INFN Pisa, Pisa, Italy)
- P. Munar-Adrover(Universitat de Barcelona)
- P. Temnikov(Inst. for Nucl. Research and Nucl. Energy Sofia, Bulgaria)
- P. Vogler(ETH Zurich Zurich, Switzerland)
- Q. Weitzel(ETH Zurich Zurich, Switzerland)
- R. J. García López(Inst. de Astrofísica de Canarias Tenerife, Spain)
- R. K. Bock(Max-Planck-Institut für Physik München, Germany)
- R. López-Coto(IFAE Bellaterra, Spain)
- R. M. Wagner(Max-Planck-Institut für Physik München, Germany)
- R. Mirzoyan(Max-Planck-Institut für Physik München, Germany)
- R. Orito(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- R. Paoletti(Università di Siena and INFN Pisa, Italy)
- R. Reinthal(Tuorla Observatory University of Turku, Piikkiö, Finland)
- R. Zanin(Universitat de Barcelona)
- S. Ansoldi(Università di Udine and INFN Trieste, Udine, Italy)
- S. Buson(Università di Padova and INFN Padova, Italy)
- S. Covino(INAF National Institute for Astrophysics Rome, Italy)
- S. Klepser(IFAE Bellaterra, Spain)
- S. Larsson(Department of Physics Stockholm University, Stockholm, Sweden)
- S. Lombardi(Università di Padova and INFN Padova, Italy)
- S. N. Shore(Università di Pisa and INFN Pisa, Pisa, Italy)
- S. Paiano(Università di Padova and INFN Padova, Italy)
- S. Pardo(Universidad Complutense Madrid, Spain)
- S. Partini(Università di Siena and INFN Pisa, Italy)
- S. R. Gozzini(Deutsches Elektronen-Synchrotron)
- S. Rügamer(Universität Würzburg Würzburg, Germany)
- S. Spiro(INAF National Institute for Astrophysics Rome, Italy)
- S. Sun(Max-Planck-Institut für Physik München, Germany)
- T. Bretz(Universität Würzburg Würzburg, Germany)
- T. Jogler(Max-Planck-Institut für Physik München, Germany)
- T. Krähenbühl(ETH Zurich Zurich, Switzerland)
- T. Schweizer(Max-Planck-Institut für Physik München, Germany)
- T. Surić(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- T. Terzić(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, Zagreb, Croatia)
- T. Y. Saito(Max-Planck-Institut für Physik München, Germany)
- U. Barres de Almeida(Max-Planck-Institut für Physik München, Germany)
- V. Kadenius(Tuorla Observatory University of Turku, Piikkiö, Finland)
- V. Scalzotto(Università di Padova and INFN Padova, Italy)
- V. Scapin(Universidad Complutense Madrid, Spain)
- V. Stamatescu(IFAE Bellaterra, Spain)
- V. Zabalza(Universitat de Barcelona)
- W. Bednarek(University of Łódź Lodz, Poland)
- W. Rhode(Technische Universität Dortmund Dortmund, Germany)
- Publication venue
- Publication date
- Field of study
Context. We present the discovery of very high energy (VHE, E > 100GeV)
gamma-ray emission from the BL Lac object 1ES 1215+303 by the MAGIC telescopes
and simultaneous multi-wavelength data in a broad energy range from radio to
gamma-rays. Aims. We study the VHE gamma-ray emission from 1ES 1215+303 and its
relation to the emissions in other wavelengths. Methods. Triggered by an
optical outburst, MAGIC observed the source in January-February 2011 for 20.3
hrs. The target was monitored in the optical R-band by the KVA telescope that
also performed optical polarization measurements. We triggered target of
opportunity observations with the Swift satellite and obtained simultaneous and
quasi-simultaneous data from the Fermi Large Area Telescope and from the
Mets\"ahovi radio telescope. We also present the analysis of older MAGIC data
taken in 2010. Results. The MAGIC observations of 1ES 1215+303 carried out in
January-February 2011 resulted in the first detection of the source at VHE with
a statistical significance of 9.4 sigma. Simultaneously, the source was
observed in a high optical and X-ray state. In 2010 the source was observed in
a lower state in optical, X-ray, and VHE, while the GeV gamma-ray flux and the
radio flux were comparable in 2010 and 2011. The spectral energy distribution
obtained with the 2011 data can be modeled with a simple one zone SSC model,
but it requires extreme values for the Doppler factor or the electron energy
distribution
Measurement of the Crab Nebula spectrum over three decades in energy with the MAGIC telescopes
- Author
- A. Babic(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- A. Biland(ETH Zurich CH-8093 Zurich, Switzerland)
- A. Carosi(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- A. De Angelis(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- A. González Muñoz(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- A. La Barbera(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- A. López-Oramas(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- A. Moralejo(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- A. Niedzwiecki(University of Łódź PL-90236 Lodz, Poland)
- A. Overkemping(Technische Universität Dortmund D-44221 Dortmund, Germany)
- A. Sillanpää(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- A. Stamerra(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- A. Treves(Università dell'Insubria and INFN Milano Bicocca Como, I-22100 Como, Italy)
- B. Biasuzzi(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- B. De Lotto(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- B. Marcote(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- C. Delgado Mendez(Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, E-28040 Madrid, Spain)
- C. Fruck(Max-Planck-Institut für Physik D-80805 München, Germany)
- C. Schultz(Università di Padova and INFN I-35131 Padova, Italy)
- D. Dominis Prester(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- D. Dorner(Universität Würzburg D-97074 Würzburg, Germany)
- D. Eisenacher(Universität Würzburg D-97074 Würzburg, Germany)
- D. Elsaesser(Universität Würzburg D-97074 Würzburg, Germany)
- D. F. Torres(ICREA and Institute of Space Sciences E-08193 Barcelona, Spain)
- D. Fidalgo(Universidad Complutense E-28040 Madrid, Spain)
- D. Galindo(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- D. Garrido Terrats(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain)
- D. Hadasch(Institute of Space Sciences E-08193 Barcelona, Spain)
- D. Hildebrand(ETH Zurich CH-8093 Zurich, Switzerland)
- D. Horns(Institut für ExperimentalPhysik Univ. Hamburg, D-22761, Hamburg, Germany)
- D. Hrupec(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- D. Lelas(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- D. Mazin(Max-Planck-Institut für Physik D-80805 München, Germany)
- D. Nakajima(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- D. Paneque(Max-Planck-Institut für Physik D-80805 München, Germany)
- D. Sobczynska(University of Łódź PL-90236 Lodz, Poland)
- D. Tescaro(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- E. Bernardini(Deutsches Elektronen-Synchrotron)
- E. Carmona(Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, E-28040 Madrid, Spain)
- E. Colombo(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- E. de Oña Wilhelmi(Institute of Space Sciences E-08193 Barcelona, Spain)
- E. Lindfors(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- E. Lorenz(Max-Planck-Institut für Physik D-80805 München, Germany)
- E. Prandini(ETH Zurich CH-8093 Zurich, Switzerland)
- F. Borracci(Max-Planck-Institut für Physik D-80805 München, Germany)
- F. Dazzi(Max-Planck-Institut für Physik D-80805 München, Germany)
- F. Longo(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- F. Spanier(Universität Würzburg D-97074 Würzburg, Germany)
- F. Tavecchio(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- for the MAGIC collaboration(Institut für ExperimentalPhysik Univ. Hamburg, D-22761, Hamburg, Germany)
- G. Bonnoli(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- G. De Caneva(Deutsches Elektronen-Synchrotron)
- G. Maneva(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- H. Kellermann(Max-Planck-Institut für Physik D-80805 München, Germany)
- H. Kubo(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- H. Takami(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- I. Lozano(Universidad Complutense E-28040 Madrid, Spain)
- I. Puljak(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- I. Snidaric(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- J. A. Barrio(Universidad Complutense E-28040 Madrid, Spain)
- J. Aleksić(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- J. Becerra González(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- J. Cortina(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- J. Herrera(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- J. Hose(Max-Planck-Institut für Physik D-80805 München, Germany)
- J. Krause(Max-Planck-Institut für Physik D-80805 München, Germany)
- J. Kushida(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- J. L. Contreras(Universidad Complutense E-28040 Madrid, Spain)
- J. M. Miranda(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- J. M. Paredes(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- J. Martin(ICREA and Institute of Space Sciences E-08193 Barcelona, Spain)
- J. Poutanen(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- J. Rico(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- J. Rodriguez Garcia(Max-Planck-Institut für Physik D-80805 München, Germany)
- J. Sitarek(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- J. Storz(Universität Würzburg D-97074 Würzburg, Germany)
- J. Thaele(Technische Universität Dortmund D-44221 Dortmund, Germany)
- K. Frantzen(Technische Universität Dortmund D-44221 Dortmund, Germany)
- K. Kodani(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- K. Mallot(Deutsches Elektronen-Synchrotron)
- K. Mannheim(Universität Würzburg D-97074 Würzburg, Germany)
- K. Nilsson(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- K. Nishijima(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- K. Noda(Max-Planck-Institut für Physik D-80805 München, Germany)
- K. Saito(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- K. Satalecka(Universidad Complutense E-28040 Madrid, Spain)
- L. A. Antonelli(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- L. Font(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain)
- L. Maraschi(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- L. Takalo(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- M. Doro(Università di Padova and INFN I-35131 Padova, Italy)
- M. Garczarczyk(Deutsches Elektronen-Synchrotron)
- M. Gaug(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain)
- M. Hayashida(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- M. L. Knoetig(ETH Zurich CH-8093 Zurich, Switzerland)
- M. López(Universidad Complutense E-28040 Madrid, Spain)
- M. Makariev(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- M. Mariotti(Università di Padova and INFN I-35131 Padova, Italy)
- M. Martínez(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- M. Meyer(Stockholm University Oskar Klein Center for Cosmoparticle Physics, SE-106 91, Stockholm, Sweden)
- M. Palatiello(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- M. Persic(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- M. Ribó(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- M. Strzys(Max-Planck-Institut für Physik D-80805 München, Germany)
- M. Teshima(Max-Planck-Institut für Physik D-80805 München, Germany)
- M. V. Fonseca(Universidad Complutense E-28040 Madrid, Spain)
- M. Will(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- MAGIC Collaboration
- N. Godinović(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- N. Lewandowska(Universität Würzburg D-97074 Würzburg, Germany)
- N. Mankuzhiyil(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- O. Blanch(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- O. Tibolla(Universität Würzburg D-97074 Würzburg, Germany)
- P. Antoranz(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- P. Bangale(Max-Planck-Institut für Physik D-80805 München, Germany)
- P. Colin(Max-Planck-Institut für Physik D-80805 München, Germany)
- P. Da Vela(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- P. G. Prada Moroni(Università di Pisa and INFN Pisa, I-56126 Pisa, Italy)
- P. Munar-Adrover(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- P. Temnikov(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- P. Vogler(ETH Zurich CH-8093 Zurich, Switzerland)
- R. J. García López(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- R. López-Coto(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- R. Mirzoyan(Max-Planck-Institut für Physik D-80805 München, Germany)
- R. Orito(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- R. Paoletti(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- R. Reinthal(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- R. Zanin(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- S. Ansoldi(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- S. Bonnefoy(Universidad Complutense E-28040 Madrid, Spain)
- S. Covino(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- S. Einecke(Technische Universität Dortmund D-44221 Dortmund, Germany)
- S. Lombardi(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- S. N. Shore(Università di Pisa and INFN Pisa, I-56126 Pisa, Italy)
- S. Paiano(Università di Padova and INFN I-35131 Padova, Italy)
- S. R. Gozzini(Deutsches Elektronen-Synchrotron)
- S. Rügamer(Universität Würzburg D-97074 Würzburg, Germany)
- T. Bretz(Universität Würzburg D-97074 Würzburg, Germany)
- T. Saito(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- T. Schweizer(Max-Planck-Institut für Physik D-80805 München, Germany)
- T. Steinbring(Universität Würzburg D-97074 Würzburg, Germany)
- T. Terzić(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- T. Toyama(Max-Planck-Institut für Physik D-80805 München, Germany)
- U. Menzel(Max-Planck-Institut für Physik D-80805 München, Germany)
- V. Kadenius(Max-Planck-Institut für Physik D-80805 München, Germany)
- V. Neustroev(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- V. Scalzotto(Università di Padova and INFN I-35131 Padova, Italy)
- V. Scapin(Universidad Complutense E-28040 Madrid, Spain)
- W. Bednarek(University of Łódź PL-90236 Lodz, Poland)
- W. Idec(University of Łódź PL-90236 Lodz, Poland)
- W. Rhode(Technische Universität Dortmund D-44221 Dortmund, Germany)
- X. Paredes-Fortuny(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- Y. Hanabata(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- Y. Konno(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- Publication venue
- Publication date
- Field of study
The MAGIC stereoscopic system collected 69 hours of Crab Nebula data between
October 2009 and April 2011. Analysis of this data sample using the latest
improvements in the MAGIC stereoscopic software provided an unprecedented
precision of spectral and night-by-night light curve determination at gamma
rays. We derived a differential spectrum with a single instrument from 50 GeV
up to almost 30 TeV with 5 bins per energy decade. At low energies, MAGIC
results, combined with Fermi-LAT data, show a flat and broad Inverse Compton
peak. The overall fit to the data between 1 GeV and 30 TeV is not well
described by a log-parabola function. We find that a modified log-parabola
function with an exponent of 2.5 instead of 2 provides a good description of
the data (χ2=35/26). Using systematic uncertainties of red the MAGIC and
Fermi-LAT measurements we determine the position of the Inverse Compton peak to
be at (53 ± 3stat + 31syst -13syst) GeV, which is the most precise
estimation up to date and is dominated by the systematic effects. There is no
hint of the integral flux variability on daily scales at energies above 300 GeV
when systematic uncertainties are included in the flux measurement. We consider
three state- of-the-art theoretical models to describe the overall spectral
energy distribution of the Crab Nebula. The constant B-field model cannot
satisfactorily reproduce the VHE spectral measurements presented in this work,
having particular difficulty reproducing the broadness of the observed IC peak.
Most probably this implies that the assumption of the homogeneity of the
magnetic field inside the nebula is incorrect. On the other hand, the
time-dependent 1D spectral model provides a good fit of the new VHE results
when considering a 80 {\mu}G magnetic field. However, it fails to match the
data when including the morphology of the nebula at lower wavelengths
Analysis Tools for Next-Generation Hadron Spectroscopy Experiments
- Author
- Battaglieri M.INFN Sezione di Genova, Genova, Italy
- Briscoe B.J.(The George Washington University, Washington D.C., USA)
- Celentano A.(INFN Sezione di Genova, Genova, Italy)
- Chung S.-U.(Technische Universität München, Physik Department, Garching, Germany)
- D'Angelo A.(Università di Roma Tor Vergata and INFN, Sezione di Roma Tor Vergata, Rome, Italy)
- da Silva M.L.L.(Instituto de Fisica e Matematica, Universidade Federal de Pelotas, CP 354, Pelotas, RS, Brazil)
- De Vita R.(INFN Sezione di Genova, Genova, Italy)
- Dudek J.J.(Thomas Jefferson National Accelerator Facility, Newport News VA, USA)
- Döring M.(The George Washington University, Washington D.C., USA)
- Eidelman S.(Budker Institute of Nuclear Physics and Novosibirsk State University, Novosibirsk, Russia)
- Fegan S.(INFN Sezione di Genova, Genova, Italy)
- Ferretti J.(Dipartimento di Fisica and INFN, Università di Roma Sapienza, Roma, Italy)
- Filippi A.(INFN Sezione di Torino, Torino, Italy)
- Fox G.(School of Informatics and Computing, Indiana University, Bloomington IN, USA)
- Galata G.(INFN Sezione di Genova, Genova, Italy)
- Garcia-Tecocoatzi H.(Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, México DF, México)
- Glazier D.I.(SUPA, School of Physics and Astronomy, University of Glasgow, UK)
- Grube B.(Technische Universität München, Physik Department, Garching, Germany)
- Hanhart C.(Institut für Kernphysik, Institute for Advanced Simulations, Jülich, Germany)
- Hoferichter M.(Albert Einstein Center for Fundamental Physics, Institute for Theoretical Physics, University of Bern, Bern, Switzerland)
- Hughes S.M.(Edinburgh University, Edinburgh, UK)
- Ireland D.G.(SUPA, School of Physics and Astronomy, University of Glasgow, UK)
- Ketzer B.(Helmholtz-Institut für Strahlen- und Kernphysik, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany)
- Klein F.J.(The Catholic University of America, Washington D.C., USA)
- Kubis B.(Helmholtz-Institut für Strahlen- und Kernphysik, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany)
- Liu B.(Institute of High Energy Physics, Beijing, China)
- Masjuan P.(PRISMA Cluster of Excellence and Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, Mainz, Germany)
- Mathieu V.(Department of Physics, Indiana University, Bloomington IN, USA)
- McKinnon B.(SUPA, School of Physics and Astronomy, University of Glasgow, UK)
- Mitchel R.(Department of Physics, Indiana University, Bloomington IN, USA)
- Nerling F.(Helmholtz-Institut Mainz, GSI Helmholtzzentrum Darmstadt, Darmstadt, Germany)
- Paul S.(Technische Universität München, Physik Department, Garching, Germany)
- Peláez J.R.(Departamento de Fisica Teórica II, Universidad Complutense, Madrid, Spain)
- Rademacker J.(H.H. Wills Physics Lab, University of Bristol, Bristol, UK)
- Rizzo A.(Università di Roma Tor Vergata and INFN, Sezione di Roma Tor Vergata, Rome, Italy)
- Salgado C.(Norfolk State University, Norfolk VA, USA)
- Santopinto E.(INFN Sezione di Genova, Genova, Italy)
- Sarantsev A.V.(Helmholtz-Institut für Strahlen- und Kernphysik, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany)
- Sato T.(Department of Physics, Osaka University, Toyonaka, Osaka, Japan)
- Schlüter T.(Ludwig-Maximilians-Universität, München, Germany)
- Stankovic I.(Edinburgh University, Edinburgh, UK)
- Strakovsky I.(The George Washington University, Washington D.C., USA)
- Szczepaniak A.(Thomas Jefferson National Accelerator Facility, Newport News VA, USA)
- Vassallo A.(INFN Sezione di Genova, Genova, Italy)
- Walford N.K.(The Catholic University of America, Washington D.C., USA)
- Watts D.P.(Edinburgh University, Edinburgh, UK)
- Zana L.(Edinburgh University, Edinburgh, UK)
- Publication venue
- Publication date
- Field of study
The series of workshops on {\it New Partial-Wave Analysis Tools for Next-Generation Hadron Spectroscopy Experiments} was initiated with the\break ATHOS 2012 meeting, which took place in Camogli, Italy, June 20--22, 2012. It was followed by ATHOS~2013 in Kloster Seeon near Munich, Germany, May 21--24, 2013. The third, ATHOS3, meeting is planned for April 13--17, 2015 at The George Washington University Virginia Science and Technology Campus, USA. The workshops focus on the development of amplitude analysis tools for meson and baryon spectroscopy, and complement other programs in hadron spectroscopy organized in the recent past including the INT-JLab Workshop on Hadron Spectroscopy in Seattle in 2009, the International Workshop on Amplitude Analysis in Hadron Spectroscopy at the ECT*-Trento in 2011, the School on Amplitude Analysis in Modern Physics in Bad Honnef in 2011, the Jefferson Lab Advanced Study Institute Summer School in 2012, and the School on Concepts of Modern Amplitude Analysis Techniques in Flecken-Zechlin near Berlin in September 2013. The aim of this document is to summarize the discussions that took place at the ATHOS~2012 and ATHOS~2013 meetings. We do not attempt a comprehensive review of the field of amplitude analysis, but offer a collection of thoughts that we hope may lay the ground for such a document. The material presented in the article was edited by the following Editorial Board: Marco Battaglieri, Bill J.~Briscoe, Su-Urk Chung, Michael D\"oring, JĂłzef Dudek, Geoffrey Fox, Christoph Hanhart, Martin Hoferichter, David G.~Ireland, Bernhard Ketzer, Bastian Kubis, Vincent Mathieu, Ryan Mitchell, Jos\'e R.~Pel\'aez, Elena Santopinto, Adam Szczepaniak
Black hole lightning due to particle acceleration at subhorizon scales
- Author
- A. Babic(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- A. Biland(ETH Zurich CH-8093 Zurich, Switzerland)
- A. Carosi(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- A. De Angelis(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- A. González Muñoz(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- A. La Barbera(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- A. López-Oramas(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- A. Moralejo(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- A. Niedzwiecki(University of Łódź PL-90236 Lodz, Poland)
- A. Overkemping(Technische Universität Dortmund D-44221 Dortmund, Germany)
- A. Sillanpää(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- A. Stamerra(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- A. Treves(Università dell'Insubria and INFN Milano Bicocca Como, I-22100 Como, Italy)
- B. Biasuzzi(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- B. De Lotto(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- B. Marcote(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- C. Delgado Mendez(Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, E-28040 Madrid, Spain)
- C. Fruck(Max-Planck-Institut für Physik D-80805 München, Germany)
- C. Schultz(Università di Padova and INFN I-35131 Padova, Italy)
- D. Dominis Prester(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- D. Dorner(Universität Würzburg D-97074 Würzburg, Germany)
- D. Eisenacher(Universität Würzburg D-97074 Würzburg, Germany)
- D. Elsaesser(Universität Würzburg D-97074 Würzburg, Germany)
- D. F. Torres(ICREA and Institute of Space Sciences E-08193 Barcelona, Spain)
- D. Galindo(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- D. Garrido Terrats(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain)
- D. Hadasch(Institute of Space Sciences E-08193 Barcelona, Spain)
- D. Hildebrand(ETH Zurich CH-8093 Zurich, Switzerland)
- D. Hrupec(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- D. Lelas(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- D. Mazin(Max-Planck-Institut für Physik D-80805 München, Germany)
- D. Nakajima(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- D. Paneque(Max-Planck-Institut für Physik D-80805 München, Germany)
- D. Sobczynska(University of Łódź PL-90236 Lodz, Poland)
- D. Tescaro(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- E. Bernardini(Deutsches Elektronen-Synchrotron)
- E. Carmona(Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, E-28040 Madrid, Spain)
- E. Colombo(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- E. de Oña Wilhelmi(Institute of Space Sciences E-08193 Barcelona, Spain)
- E. Lindfors(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- E. Lorenz(Max-Planck-Institut für Physik D-80805 München, Germany)
- E. Prandini(ETH Zurich CH-8093 Zurich, Switzerland)
- E. Ros(Max-Planck-Institut für Radioastronomie D-53121 Bonn, German)
- F. Borracci(Max-Planck-Institut für Physik D-80805 München, Germany)
- F. Dazzi(Max-Planck-Institut für Physik D-80805 München, Germany)
- F. Krauß(Universität Würzburg D-97074 Würzburg, Germany)
- F. Longo(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- F. Spanier(Universität Würzburg D-97074 Würzburg, Germany)
- F. Tavecchio(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- G. Bonnoli(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- G. De Caneva(Deutsches Elektronen-Synchrotron)
- G. Maneva(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- H. Kellermann(Max-Planck-Institut für Physik D-80805 München, Germany)
- H. Kubo(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- H. Takami(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- I. Lozano(Universidad Complutense E-28040 Madrid, Spain)
- I. Puljak(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- I. Snidaric(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- J. A. Barrio(Universidad Complutense E-28040 Madrid, Spain)
- J. Aleksić(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- J. Becerra González(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- J. Cortina(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- J. Herrera(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- J. Hose(Max-Planck-Institut für Physik D-80805 München, Germany)
- J. Krause(Max-Planck-Institut für Physik D-80805 München, Germany)
- J. Kushida(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- J. L. Contreras(Universidad Complutense E-28040 Madrid, Spain)
- J. M. Miranda(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- J. M. Paredes(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- J. Poutanen(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- J. Rico(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- J. Rodriguez Garcia(Max-Planck-Institut für Physik D-80805 München, Germany)
- J. Sitarek(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- J. Storz(Universität Würzburg D-97074 Würzburg, Germany)
- J. Thaele(Technische Universität Dortmund D-44221 Dortmund, Germany)
- J. Wilms(Dr. Remeis-Sternwarte Bamberg Astronomisches Institut der Universität Erlangen-Nürnberg, ECAP, D-96049 Bamberg, Germany)
- K. Frantzen(Technische Universität Dortmund D-44221 Dortmund, Germany)
- K. Kodani(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- K. Mallot(Deutsches Elektronen-Synchrotron)
- K. Mannheim(Universität Würzburg D-97074 Würzburg, Germany)
- K. Nilsson(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- K. Nishijima(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- K. Noda(Max-Planck-Institut für Physik D-80805 München, Germany)
- K. Saito(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- K. Satalecka(Universidad Complutense E-28040 Madrid, Spain)
- L. A. Antonelli(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- L. Font(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain)
- L. Maraschi(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- L. Takalo(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- M. Doro(Università di Padova and INFN I-35131 Padova, Italy)
- M. Garczarczyk(Deutsches Elektronen-Synchrotron)
- M. Gaug(Unitat de Física de les Radiacions Departament de Física, and CERES-IEEC, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain)
- M. Hayashida(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- M. Kadler(Universität Würzburg D-97074 Würzburg, Germany)
- M. López(Universidad Complutense E-28040 Madrid, Spain)
- M. Makariev(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- M. Mariotti(Università di Padova and INFN I-35131 Padova, Italy)
- M. Martínez(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- M. Palatiello(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- M. Persic(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- M. Ribó(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- M. Strzys(Max-Planck-Institut für Physik D-80805 München, Germany)
- M. Teshima(Max-Planck-Institut für Physik D-80805 München, Germany)
- M. Uellenbeck(Technische Universität Dortmund D-44221 Dortmund, Germany)
- M. V. Fonseca(Universidad Complutense E-28040 Madrid, Spain)
- MAGIC Collaboration
- N. Godinović(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- N. Lewandowska(Universität Würzburg D-97074 Würzburg, Germany)
- N. Mankuzhiyil(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- O. Blanch(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- O. Tibolla(Universität Würzburg D-97074 Würzburg, Germany)
- P. Antoranz(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- P. Bangale(Max-Planck-Institut für Physik D-80805 München, Germany)
- P. Colin(Max-Planck-Institut für Physik D-80805 München, Germany)
- P. Da Vela(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- P. G. Prada Moroni(Università di Pisa and INFN Pisa, I-56126 Pisa, Italy)
- P. Munar-Adrover(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- P. Temnikov(Inst. for Nucl. Research and Nucl. Energy BG-1784 Sofia, Bulgaria)
- P. Vogler(ETH Zurich CH-8093 Zurich, Switzerland)
- R. J. García López(Inst. de Astrofísica de Canarias E-38200 La Laguna, Tenerife, Spain)
- R. López-Coto(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- R. Mirzoyan(Max-Planck-Institut für Physik D-80805 München, Germany)
- R. Orito(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- R. Paoletti(Università di Siena and INFN Pisa, I-53100 Siena, Italy)
- R. Reinthal(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- R. Schulz(Universität Würzburg D-97074 Würzburg, Germany)
- R. Zanin(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- S. Ansoldi(Università di Udine and INFN Trieste, I-33100 Udine, Italy)
- S. Bonnefoy(Universidad Complutense E-28040 Madrid, Spain)
- S. Covino(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- S. Einecke(Technische Universität Dortmund D-44221 Dortmund, Germany)
- S. Lombardi(INAF National Institute for Astrophysics I-00136 Rome, Italy)
- S. N. Shore(Università di Pisa and INFN Pisa, I-56126 Pisa, Italy)
- S. Paiano(Università di Padova and INFN I-35131 Padova, Italy)
- S. R. Gozzini(Deutsches Elektronen-Synchrotron)
- S. Rügamer(Universität Würzburg D-97074 Würzburg, Germany)
- T. Bretz(Universität Würzburg D-97074 Würzburg, Germany)
- T. Saito(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- T. Schweizer(Max-Planck-Institut für Physik D-80805 München, Germany)
- T. Steinbring(Universität Würzburg D-97074 Würzburg, Germany)
- T. Terzić(Croatian MAGIC Consortium Rudjer Boskovic Institute, University of Rijeka and University of Split, HR-10000 Zagreb, Croatia)
- T. Toyama(Max-Planck-Institut für Physik D-80805 München, Germany)
- U. Bach(Max-Planck-Institut für Radioastronomie D-53121 Bonn, German)
- U. Menzel(Max-Planck-Institut für Physik D-80805 München, Germany)
- V. Kadenius(Finnish MAGIC Consortium Tuorla Observatory, University of Turku and Department of Physics, University of Oulu, Finland)
- V. Scalzotto(Università di Padova and INFN I-35131 Padova, Italy)
- V. Scapin(Universidad Complutense E-28040 Madrid, Spain)
- V. Stamatescu(IFAE Campus UAB, E-08193 Bellaterra, Spain)
- W. Bednarek(University of Łódź PL-90236 Lodz, Poland)
- W. Idec(University of Łódź PL-90236 Lodz, Poland)
- W. Rhode(Technische Universität Dortmund D-44221 Dortmund, Germany)
- X. Paredes-Fortuny(Universitat de Barcelona ICC, IEEC-UB, E-08028 Barcelona, Spain)
- Y. Hanabata(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- Y. Konno(Japanese MAGIC Consortium Division of Physics and Astronomy, Kyoto University, Japan)
- Publication venue
- Publication date
- Field of study
Supermassive black holes with masses of millions to billions of solar masses
are commonly found in the centers of galaxies. Astronomers seek to image jet
formation using radio interferometry, but still suffer from insufficient
angular resolution. An alternative method to resolve small structures is to
measure the time variability of their emission. Here, we report on gamma-ray
observations of the radio galaxy IC 310 obtained with the MAGIC telescopes
revealing variability with doubling time scales faster than 4.8 min. Causality
constrains the size of the emission region to be smaller than 20\% of the
gravitational radius of its central black hole. We suggest that the emission is
associated with pulsar-like particle acceleration by the electric field across
a magnetospheric gap at the base of the radio jet