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The Pierre Auger Observatory scaler mode for the study of solar activity modulation of galactic cosmic rays

By P. Abreu, M. Aglietta, E.J. Ahn, D. Allard, I. Allekotte, J. Allen, J. Alvarez, J. Alvarez-Muniz, M. Ambrosio, A. Aminaei, L. Anchordoqui, S. Andringa, T. Anticic, A. Anzalone, C. Aramo, E. Arganda, K. Arisaka, F. Arqueros, H. Asorey, P. Assis, J. Aublin, M. Ave, M. Avenier, G. Avila, T. Backer, D. Badagnani, M. Balzer, K.B. Barber, A.F. Barbosa, R. Bardenet, S.L.C. Barroso, B. Baughman, J.J. Beatty, B.R. Becker, K.H. Becker, A. Belletoile, J.A. Bellido, S. Benzvi, C. Berat, T. Bergmann, X. Bertou, P.L. Biermann, P. Billoir, F. Blanco, M. Blanco, C. Bleve, H. Blumer, M. Bohacova, D. Boncioli, C. Bonifazi, R. Bonino, N. Borodai, J. Brack, P. Brogueira, W.C. Brown, R. Bruijn, P. Buchholz, A. Bueno, R.E. Burton, N.G. Busca, K.S. Caballero-Mora, L. Caramete, R. Caruso, A. Chiavassa, J.A. Chinellato, A. Chou, J. Chudoba, R.W. Clay, E. Colombo, M.R. Coluccia, S. Coutu, C.E. Covault, A. Creusot, A. Criss, J. Cronin, A. Curutiu, S. Dagoret-Campagne, R. Dallier, S. Dasso, K. Daumiller, B.R. Dawson, R.M. Dealmeida, M. De Domenico, C. De Donato, S.J. De Jong, G. De La Vega, W.J.M. De Mellojunior, J.R.T. Demelloneto, I. Demitri, V. Desouza, K.D. Devries, G. Decerprit, L. Del Peral, O. Deligny, A. Della Selva, H. Dembinski, A. Denkiewicz, C. Di Giulio, J.C. Diaz, M.L. Dıaz Castro, P.N. Diep, C. Dobrigkeit, J.C. D'Olivo, P.N. Dong, A. Dorofeev, J.C. Dosanjos, M.T. Dova, D. D'Urso, I. Dutan, J. Ebr, R. Engel, M. Erdmann, C.O. Escobar, A. Etchegoyen, P. Facal Sanluis, H. Falcke, G. Farrar, A.C. Fauth, N. Fazzini, A.P. Ferguson, A. Ferrero, B. Fick, A. Filevich, A. Filipcic, I. Fleck, S. Fliescher, C.E. Fracchiolla, E.D. Fraenkel, U. Frohlich, B. Fuchs, W. Fulgione, R.F. Gamarra, S. Gambetta, B. Garcıa, D. Garcıa Gamez, D. Garcia-Pinto, X. Garrido, A. Gascon, G. Gelmini, H. Gemmeke, K. Gesterling, P.L. Ghia, U. Giaccari, M. Giller, H. Glass, M.S. Gold, G. Golup, F. Gomez, M. Gomezberisso, P. Goncalves, D. Gonzalez, J.G. Gonzalez, B. Gookin, D. Gora, A. Gorgi, P. Gouffon, S.R. Gozzini, E. Grashorn, S. Grebe, M. Grigat, A.F. Grillo, Y. Guardincerri, F. Guarino, G.P. Guedes, J.D. Hague, P. Hansen, C. Hojvat, V.C. Holmes, P. Homola, J.R. Horandel, A. Horneffer, M. Hrabovsky, T. Huege, A. Insolia, F. Ionita, A. Italiano, S. Jiraskova, K. Kadija, M. Kaducak, K.H. Kampert, P. Karhan, T. Karova, P. Kasper, Balázs Kégl, B. Keilhauer, A. Keivani, J.L. Kelley, E. Kemp, R.M. Kieckhafer, H.O. Klages, M. Kleifges, J. Kleinfeller, J. Knapp, D.H. Koang, K. Kotera, N. Krohm, O. Kromer, D. Kruppke-Hansen, F. Kuehn, D. Kuempel, J.K. Kulbartz, N. Kunka, G. La Rosa, C. Lachaud, Pascal Lautridou, M.S.A.B. Leao, D. Lebrun, P. Lebrun, M.A. Leigui De Oliveira, A. Lemiere, A. Letessier-Selvon, I. Lhenry-Yvon, K. Link, R. Lopez, A. Lopez Aguera, K. Louedec, J. Lozano Bahilo, A. Lucero, M. Ludwig, H. Lyberis, M.C. Maccarone, C. Macolino, S. Maldera, D. Mandat, P. Mantsch, A.G. Mariazzi, V. Marin, I.C. Maris, H.R. Marquez Falcon, G. Marsella, D. Martello, L. Martin, O. Martınez Bravo, H.J. Mathes, J. Matthews, J.A.J. Matthews, G. Matthiae, D. Maurizio, P.O. Mazur, G. Medina-Tanco, M. Melissas, D. Melo, E. Menichetti, A. Menshikov, C. Meurer, S. Micanovic, M.I. Micheletti, W. Miller, L. Miramonti, D.Monnier Ragaigne, M. Munchmeyer, R. Mussa, G. Navarra†, J.L. Navarro, S. Navas, P. Necesal, J. Oehlschlager, A. Olinto, P. Oliva, V.M. Olmos-Gilbaja, M. Ortiz, N. Pacheco, D. Pakk Selmi-Dei, M. Palatka, J. Pallotta, N. Palmieri, G. Parente, E. Parizot, A. Parra, J. Parrisius, R.D. Parsons, S. Pastor, T. Paul, V. Pavlidouc, K. Payet, M. Pech, J. Pekala, R. Pelayo, I.M. Pepe, L. Perrone, R. Pesce, E. Petermann, S. Petrera, P. Petrinca, A. Petrolini, Y. Petrov, J. Petrovic, C. Pfendner, N. Phan, R. Piegaia, T. Pierog, P. Pieroni, M. Pimenta, V. Pirronello, M. Platino, V.H. Ponce, M. Pontz, P. Privitera, M. Prouza, E.J. Quel, J. Rautenberg, O. Ravel, D. Ravignani, Benoît Revenu, J. Ridky, S. Riggi, M. Risse, P. Ristori, H. Rivera, C. Riviere, V. Rizi, C. Robledo, G. Rodriguez, J. Rodriguez Martino, J. Rodriguez Rojo, I. Rodriguez-Cabo, M.D. Rodrıguez-Frıas, G. Ros, J. Rosado, T. Rossler, M. Roth, B. Rouille D'Orfeuil, E. Roulet, A.C. Rovero, F. Salamida, H. Salazar, G. Salina, F. Sanchez, M. Santander, C.E. Santo, E. Santos, E.M. Santos, F. Sarazin, S. Sarkar, R. Sato, N. Scharf, V. Scherini, H. Schieler, P. Schiffer, A. Schmidt, F. Schmidt, T. Schmidt, F. Schussler, D. Schuster, S.J. Sciutto, M. Scuderi, A. Segreto, D.V. Semikoz, M. Settimo, A. Shadkam, R.C. Shellard, I. Sidelnik, G. Sigl, A. Smiałkowski, R. Smıda, G.R. Snow, P. Sommers, J. Sorokin, H. Spinka, R. Squartini, J. Stapleton, J. Stasielak, M. Stephan, A. Stutz, T. Suomijarvi, A.D. Supanitsky, T. Susa, M.S. Sutherland, J. Swain, Z. Szadkowski, A. Tamashiro, A. Tapia, T. Tarutina, O. Tascau, R. Tcaciuc, D. Tcherniakhovski, D. Tegolo, N.T. Thao, D. Thomas, J. Tiffenberg, C. Timmermans, D.K. Tiwari, W. Tkaczyk, E. Trovato, M. Tueros, R. Ulrich, M. Unger, Martin Urban, J.F. Valdes Galicia, I. Valino, L. Valore, A.M. Van Den Berg, B. Vargas Cardenas, J.R. Vazquez, R.A. Vazquez, D. Veberic, T. Venters, V. Verzi, M. Videla, L. Villasenor, H. Wahlberg, P. Wahrlich, O. Wainberg, D. Warner, A.A. Watson, M. Weber, K. Weidenhaupt, A. Weindl, S. Westerhoff, B.J. Whelan, G. Wieczorek, L. Wiencke, B. Wilczynska, H. Wilczynski, M. Will, C. Williams, T. Winchen, L. Winders, M.G. Winnick, M. Wommer, B. Wundheiler, T. Yamamotoa, P. Younk, G. Yuan, A. Yushkov, B. Zamorano, E. Zas, D. Zavrtanik, M. Zavrtanik, I. Zaw, A. Zepeda, A. Cordier, C.J.Todero Peixoto, B. Tome, A. Tonachini, P. Travnicek, D.B. Tridapalli, G. Tristram, J. Chauvin and F. Montanet

Abstract

International audienceSince data-taking began in January 2004, the Pierre Auger Observatory has been recording the count rates of low energy secondary cosmic ray particles for the self-calibration of the ground detectors of its surface detector array. After correcting for atmospheric effects, modulations of galactic cosmic rays due to solar activity and transient events are observed. Temporal variations related with the activity of the heliosphere can be determined with high accuracy due to the high total count rates. In this study, the available data are presented together with an analysis focused on the observation of Forbush decreases, where a strong correlation with neutron monitor data is found

Topics: Cherenkov detectors, Large detector systems for particle and astroparticle physics, Particle detectors, [ PHYS.ASTR.HE ] Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], [ SDU.ASTR.HE ] Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], [ SDU.ASTR.IM ] Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], [ PHYS.ASTR.IM ] Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM]
Publisher: IOP Publishing
Year: 2011
DOI identifier: 10.1088/1748-0221
OAI identifier: oai:HAL:in2p3-00562044v1
Provided by: Hal-Diderot
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