17 research outputs found
Search for muon-neutrino emission from GeV and TeV gamma-ray flaring blazars using five years of data of the ANTARES telescope
The ANTARES telescope is well-suited for detecting astrophysical transient
neutrino sources as it can observe a full hemisphere of the sky at all times
with a high duty cycle. The background due to atmospheric particles can be
drastically reduced, and the point-source sensitivity improved, by selecting a
narrow time window around possible neutrino production periods. Blazars, being
radio-loud active galactic nuclei with their jets pointing almost directly
towards the observer, are particularly attractive potential neutrino point
sources, since they are among the most likely sources of the very high-energy
cosmic rays. Neutrinos and gamma rays may be produced in hadronic interactions
with the surrounding medium. Moreover, blazars generally show high time
variability in their light curves at different wavelengths and on various time
scales. This paper presents a time-dependent analysis applied to a selection of
flaring gamma-ray blazars observed by the FERMI/LAT experiment and by TeV
Cherenkov telescopes using five years of ANTARES data taken from 2008 to 2012.
The results are compatible with fluctuations of the background. Upper limits on
the neutrino fluence have been produced and compared to the measured gamma-ray
spectral energy distribution.Comment: 27 pages, 16 figure
Search for muon-neutrino emission from GeV and TeV gamma-ray flaring blazars using five years of data of the ANTARES telescope
The ANTARES telescope is well-suited for detecting astrophysical transient neutrino
sources as it can observe a full hemisphere of the sky at all times with a high duty cycle.
The background due to atmospheric particles can be drastically reduced, and the point-source
sensitivity improved, by selecting a narrow time window around possible neutrino production
periods. Blazars, being radio-loud active galactic nuclei with their jets pointing almost
directly towards the observer, are particularly attractive potential neutrino point sources,
since they are among the most likely sources of the very high-energy cosmic rays. Neutrinos
and gamma rays may be produced in hadronic interactions with the surrounding medium.
Moreover, blazars generally show high time variability in their light curves at different wavelengths
and on various time scales. This paper presents a time-dependent analysis applied
to a selection of flaring gamma-ray blazars observed by the FERMI/LAT experiment and
by TeV Cherenkov telescopes using five years of ANTARES data taken from 2008 to 2012.
The results are compatible with fluctuations of the background. Upper limits on the neutrino
fluence have been produced and compared to the measured gamma-ray spectral energy
distributionThe authors acknowledge the financial support of the funding agencies: Centre National de la Recherche Scientifique (CNRS), Commissariat a l'energie atomique et aux energies alternatives (CEA), Commission Europeenne (FEDER fund and Marie Curie Program), Region Ile-de-France (DIM-ACAV) Region Alsace (contrat CPER), Region Provence-Alpes-Cote d'Azur, Departement du Var and Ville de La Seyne-sur-Mer, France; Bundesministerium fur Bildung und Forschung (BMBF), Germany; Istituto Nazionale di Fisica Nucleare (INFN), Italy; Stichting voor Fundamenteel Onderzoek der Materie (FOM), Nederlandse organisatie voor Wetenschappelijk Onderzoek (NWO), the Netherlands; Council of the President of the Russian Federation for young scientists and leading scientific schools supporting grants, Russia; National Authority for Scientific Research (ANCS), Romania; Ministerio de Economia y Competitividad (MINECO), Prometeo and Grisolia programs of Generalitat Valenciana and MultiDark, Spain; Agence de l'Oriental and CNRST, Morocco. We also acknowledge the technical support of Ifremer, AIM and Foselev Marine for the sea operation and the CC-IN2P3 for the computing facilities.Adrián Martínez, S.; Albert, A.; André, M.; Anton, G.; Ardid Ramírez, M.; Aubert, J.; Baret, B.... (2015). Search for muon-neutrino emission from GeV and TeV gamma-ray flaring blazars using five years of data of the ANTARES telescope. Journal of Cosmology and Astroparticle Physics. 12(14):1-26. https://doi.org/10.1088/1475-7516/2015/12/014S1261214Becker, J. K. (2008). High-energy neutrinos in the context of multimessenger astrophysics. Physics Reports, 458(4-5), 173-246. doi:10.1016/j.physrep.2007.10.006Bloom, S. D., & Marscher, A. P. (1996). An Analysis of the Synchrotron Self-Compton Model for the Multi--Wave Band Spectra of Blazars. The Astrophysical Journal, 461, 657. doi:10.1086/177092Maraschi, L., Ghisellini, G., & Celotti, A. (1992). A jet model for the gamma-ray emitting blazar 3C 279. 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Search for a diffuse flux of high-energy νμ with the ANTARES neutrino telescope. Physics Letters B, 696(1-2), 16-22. doi:10.1016/j.physletb.2010.11.070Adrián-Martínez, S., Al Samarai, I., Albert, A., André, M., Anghinolfi, M., Anton, G., … Aubert, J.-J. (2012). SEARCH FOR COSMIC NEUTRINO POINT SOURCES WITH FOUR YEARS OF DATA FROM THE ANTARES TELESCOPE. The Astrophysical Journal, 760(1), 53. doi:10.1088/0004-637x/760/1/53Adrián-Martínez, S., Albert, A., André, M., Anghinolfi, M., Anton, G., Ardid, M., … Barrios, J. (2014). A search for time dependent neutrino emission from microquasars with the ANTARES telescope. Journal of High Energy Astrophysics, 3-4, 9-17. doi:10.1016/j.jheap.2014.06.002Adrián-Martínez, S., Albert, A., Al Samarai, I., André, M., Anghinolfi, M., Anton, G., … Aubert, J.-J. (2013). Search for muon neutrinos from gamma-ray bursts with the ANTARES neutrino telescope using 2008 to 2011 data. Astronomy & Astrophysics, 559, A9. doi:10.1051/0004-6361/201322169Abdo, A. A., Ackermann, M., Ajello, M., Antolini, E., Baldini, L., Ballet, J., … Bellazzini, R. (2010). GAMMA-RAY LIGHT CURVES AND VARIABILITY OF BRIGHTFERMI-DETECTED BLAZARS. The Astrophysical Journal, 722(1), 520-542. doi:10.1088/0004-637x/722/1/520Ackermann, M., Ajello, M., Allafort, A., Antolini, E., Atwood, W. B., Axelsson, M., … Bastieri, D. (2011). THE SECOND CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THEFERMILARGE AREA TELESCOPE. The Astrophysical Journal, 743(2), 171. doi:10.1088/0004-637x/743/2/171Hovatta, T., Pavlidou, V., King, O. G., Mahabal, A., Sesar, B., Dancikova, R., … Surace, J. (2014). Connection between optical and γ-ray variability in blazars. Monthly Notices of the Royal Astronomical Society, 439(1), 690-702. doi:10.1093/mnras/stt2494Adrián-Martínez, S., Al Samarai, I., Albert, A., André, M., Anghinolfi, M., Anton, G., … Aubert, J.-J. (2012). Search for neutrino emission from gamma-ray flaring blazars with the ANTARES telescope. Astroparticle Physics, 36(1), 204-210. doi:10.1016/j.astropartphys.2012.06.001Aguilar, J. A., Albert, A., Ameli, F., Amram, P., Anghinolfi, M., Anton, G., … Aubert, J.-J. (2005). Study of large hemispherical photomultiplier tubes for the ANTARES neutrino telescope. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 555(1-2), 132-141. doi:10.1016/j.nima.2005.09.035Amram, P., Anghinolfi, M., Anvar, S., Ardellier-Desages, F. ., Aslanides, E., Aubert, J.-J., … Battaglieri, M. (2002). The ANTARES optical module. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 484(1-3), 369-383. doi:10.1016/s0168-9002(01)02026-5Adrián-Martínez, S., Ageron, M., Aguilar, J. A., Samarai, I. A., Albert, A., André, M., … Ardid, M. (2012). The positioning system of the ANTARES Neutrino Telescope. 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Combined search for neutrinos from dark matter self-annihilation in the Galactic Center with ANTARES and IceCube
We present the results of the first combined dark matter search targeting the
Galactic Centre using the ANTARES and IceCube neutrino telescopes. For dark
matter particles with masses from 50 to 1000 GeV, the sensitivities on the
self-annihilation cross section set by ANTARES and IceCube are comparable,
making this mass range particularly interesting for a joint analysis. Dark
matter self-annihilation through the , ,
and channels is considered for both the Navarro-Frenk-White and
Burkert halo profiles. In the combination of 2,101.6 days of ANTARES data and
1,007 days of IceCube data, no excess over the expected background is observed.
Limits on the thermally-averaged dark matter annihilation cross section
are set. These limits present an improvement
of up to a factor of two in the studied dark matter mass range with respect to
the individual limits published by both collaborations. When considering dark
matter particles with a mass of 200 GeV annihilating through the
channel, the value obtained for the limit is for the Navarro-Frenk-White halo profile. For the
purpose of this joint analysis, the model parameters and the likelihood are
unified, providing a benchmark for forthcoming dark matter searches performed
by neutrino telescopes
Search for secluded dark matter towards the Galactic Centre with the ANTARES neutrino telescope
Searches for dark matter (DM) have not provided any solid evidence for the existence of weakly interacting massive particles in the GeV-TeV mass range. Coincidentally, the scale of new physics is being pushed by collider searches well beyond the TeV domain. This situation strongly motivates the exploration of DM masses much larger than a TeV. Secluded scenarios contain a natural way around the unitarity bound on the DM mass, via the early matter domination induced by the mediator of its interactions with the Standard Model. High-energy neutrinos constitute one of the very few direct accesses to energy scales above a few TeV. An indirect search for secluded DM signals has been performed with the ANTARES neutrino telescope using data from 2007 to 2015. Upper limits on the DM annihilation cross section for DM masses up to 6 PeV are presented and discussed
Search for secluded dark matter towards the Galactic Centre with the ANTARES neutrino telescope
Searches for dark matter (DM) have not provided any solid evidence for the existence of weakly interacting massive particles in the GeV-TeV mass range. Coincidentally, the scale of new physics is being pushed by collider searches well beyond the TeV domain. This situation strongly motivates the exploration of DM masses much larger than a TeV. Secluded scenarios contain a natural way around the unitarity bound on the DM mass, via the early matter domination induced by the mediator of its interactions with the Standard Model. High-energy neutrinos constitute one of the very few direct accesses to energy scales above a few TeV. An indirect search for secluded DM signals has been performed with the ANTARES neutrino telescope using data from 2007 to 2015. Upper limits on the DM annihilation cross section for DM masses up to 6 PeV are presented and discussed
Search for secluded dark matter towards the Galactic Centre with the ANTARES neutrino telescope
Searches for dark matter (DM) have not provided any solid evidence for the existence of weakly interacting massive particles in the GeV-TeV mass range. Coincidentally, the scale of new physics is being pushed by collider searches well beyond the TeV domain. This situation strongly motivates the exploration of DM masses much larger than a TeV. Secluded scenarios contain a natural way around the unitarity bound on the DM mass, via the early matter domination induced by the mediator of its interactions with the Standard Model. High-energy neutrinos constitute one of the very few direct accesses to energy scales above a few TeV. An indirect search for secluded DM signals has been performed with the ANTARES neutrino telescope using data from 2007 to 2015. Upper limits on the DM annihilation cross section for DM masses up to 6 PeV are presented and discussed
Search for secluded dark matter towards the Galactic Centre with the ANTARES neutrino telescope
Searches for dark matter (DM) have not provided any solid evidence for the existence of weakly interacting massive particles in the GeV-TeV mass range. Coincidentally, the scale of new physics is being pushed by collider searches well beyond the TeV domain. This situation strongly motivates the exploration of DM masses much larger than a TeV. Secluded scenarios contain a natural way around the unitarity bound on the DM mass, via the early matter domination induced by the mediator of its interactions with the Standard Model. High-energy neutrinos constitute one of the very few direct accesses to energy scales above a few TeV. An indirect search for secluded DM signals has been performed with the ANTARES neutrino telescope using data from 2007 to 2015. Upper limits on the DM annihilation cross section for DM masses up to 6 PeV are presented and discussed