Large scale distribution of arrival directions of cosmic rays detected above $10^{18}$ eV at the Pierre Auger Observatory
P Abreu,N Borodai, G P Guedes, J Neuser,R Lauer, M Munchmeyer, M Ave,I M Brancus, J Schovancova, D Kruppkehansen,Luis Del Peral,A Dorofeev,C Timmermans,Bruno Daniel,J Pallotta,Corinne Berat,Milton Leao,Shihho Cheng,Diego Melo,S Querchfeld, M Kleifges, R Cester,Juan Cruz Moreno, P N Dong,Stephane Coutu,I M Pepe, P Younk,M Risse,A C Fauth, A Menshikov,F Salamida,N Kunka,F Montanet, Y Guardincerri,B Kegl,Sjoert Van Velzen, R Dallier,Gualberto Avila,A Almela,B M Baughman, M Giller,N Scharf, Angeles Lopez Aguera, R Tcaciuc,D Ravignani, E Parizot, J Kleinfeller,Tokonatsu Yamamoto,Hugo R Marquez Falcon,B Garcia,P Pieroni, P Lebrun, S Stanic,V Pirronello,Luis A Anchordoqui, Christine Meurer,V Verzi, Alberto Gascon Bravo,R Bonino,Martin Will, T Hebbeker, B Wilczynska,Laura Collica,A Bueno,J Martino, J C Dolivo,Rafael Alves Batista,A Filevich,Arnulfo Zepeda,Ivone F M Albuquerque, K Kadija,Marianne Ludwig, F Ionita,A Insolia,S Petrera,I Sidelnik, M I Micheletti,G Cocciolo, W Docters, C Morello,A Widom,H Dembinski,Manlio De Domenico,C Dobrigkeit,D Mandat,Jing Zhou, G Tristram,M Palatka,Yevgeniy Petrov,B Tome,L Nožka,Patricia Goncalves,F Arqueros,James Stapleton,L Miramonti,Patricia Hansen, T Anticic,Gianni Navarra,O Deligny,D Garciapinto,P Billoir,C Jarne, J H Kelley,R Mussa,A Castellina,Eunjoo Ahn, R F Gamarra,Gonzalo Rodriguez, K B Barber,Sergio Navas, R Gaior, Joel Chauvin,Anne Stutz,H Salazar,Mario Scuderi,J Alvarezmuniz,Oscar Martinez Bravo,Kumiko Kotera,R Pelayo,Stefan Jansen,D Veberic,K Daumiller, Iago Rodriguez Cabo, A P Ferguson,C Escobar,J Stasielak,C Bleve,J Pekala,Dyholm Koang,H Asorey,A Herve,Jose Chinellato, I Lhenryyvon,J R Vazquez,Jonathan Roberts, A Shadkam,Pedro Assis,H Schoorlemmer,N Fazzini,S Sarkar,I Katkov, G Medinatanco, E D Fraenkel, E Arganda,Dieter Heck,Guus Van Aar,Federico Suarez,Miroslav Hrabovský,C Lachaud,J Vicha,M Aglietta, S Jiraskova,M Gold,Joerg Kulbartz,T Yapici,Lilian Martin,F G Schroder,Guillermo Torralba Elipe,Ad M Van Den Berg,M C Maccarone,P Schiffer,Yue Zhu,O Tascău, I Dutan, M Wommer,Eduardo Moreno,K S Caballeromora,C E Santo,Marc Weber, P Wahrlich,Peter Mazur, E Trovato, A Aminaei, P Buchholz, Mathew J Cooper, P L Ghia,Simone Riggi,Julio Lozano Bahilo, J Sorokin,O Sima,G Salina, A Haungs,Silvia Mollerach, J Coppens, Sandra Le Coz,V Scherini,N Hollon,P Gouffon,Daniele Martello, M Tartare, M Monasor, A Creusot, M Cilmo,German Ros,Ralf Ulrich, P N Diep,Joao Dos Anjos, G R Snow,G Cataldi,M Pimenta, Hector Hugo Silva Lopez,N Nierstenhoefer,R W Clay, Jorge Ruben Rodriguez Rojo, I A Minaya,S Gambetta,C E Covault,M Niechciol,Alain Cordier, B Revenu, M Josebachuili,C Hojvat,Pham Thi Tuyet Nhung, J Aublin,Michael Unger,Alejandra Parra,A Petrolini,G Matthiae, H Schieler,B E Fick, Bernardo Vargas Cardenas,Heather Cook, H Lyberis,Humberto Martinez, O Kromer,D Garciagamez,Miguel Mostafa, B Rouilledorfeuil, A F Barbosa,Diane Martraire,D Boncioli, A Tonachini, Montserrat Ortiz, D Allard,Lu Lu,Rebeca Lopez,J A Bellido,Johannes Knapp,G Golup,Arjen Van Vliet,R Conceicao, C P Williams, V H Ponce,M Ziolkowski,Paul Sommers,A Keivani, M T Dova,Fausto Guarino, D J Schuster, A Curutiu,Sofia Andringa, K Louedec, E J Quel,K H Kampert,Glennys R Farrar,R Pesce,Dave Thomas, L Wiencke,G Wieczorek,Giovanni Rosa, B Keilhauer, U Frohlich,S Dasso,Ernesto Kemp, Delphine Monnier Ragaigne,Alex Tapia,I Valino,A Letessierselvon, B J Whelan,Alan Watson, Jimmy Masias Meza,M Muller,Mariano Gomez Berisso,H O Klages, P H Kasper, D Zavrtanik, Jennifer Maller,Benjamin Fuchs, Jose F Valdes Galicia,Stefano Messina, M Balzer,J Rautenberg, Gabriel Toma, D Kuempel,Sijbrand J De Jong,P Brogueira,Philip Mertsch,N Griffith,V Rizi, M Videla,Vitor De Souza,O Scholten,R Vazquez,Peter L Biermann,D Durso,M Tueros,Miroslav Pech, M Platino,E Petermann,Edivaldo Moura Santos,G Parente,H Falcke,Matthias Plum,S Westerhoff, T A Harrison,M Settimo, Marcelo Zimbres Silva, L Valore,J Espadanal,H Blumer,Jaime Rosado, D B Tridapalli,J J Beatty,M Zavrtanik,Noelia Pacheco, T Winchen, V C Holmes,Danielle Lahurd,Daniel Huber,Colin Baus, F Diogo,Claudio Di Giulio,L Molinabueno,Marcel Urban,Y N Srivastava,M Prouza, A Chiavassa, Antonio Italiano,A F Grillo,T Paul,Z Szadkowski,J Ridky,Laurentiu Caramete,W Tkaczyk,Jeffrey C Allen,P Privitera,Walter Jm De Mello Junior, R Piegaia,Ingyin Zaw, A Porcelli,Guenter Sigl,T Rossler, T Suomijarvi,Bruce R Dawson,I C Maris,A C Rovero, J Oehlschlager,L Latronico,T Pierog,G Marsella, A Etchegoyen,N Palmieri,Javier Gonzalez,N T Thao, D Lebrun,A Nelles,John Aj Matthews,J Castillo,J L Navarro,T Huege,T Susa,Claudia Fracchiolla, H Rivera,Agustin Lucero,G Hill,R C Shellard,Cinzia De Donato,Vincent Marin,L Nellen, M Avenier, B Wundheiler,Benjamin Morales, J D Swain,Daniel Pakk Selmidei,Octavian Fratu,J M Figueira,S Maldera,C Aramo,Rossella Caruso,Piotr Homola, O Ravel,A M Badescu,Sergio Pastor,D Nosek,E Menichetti, A Belletoile, B Gookin, C A Moura,Javier Marin,Flavia Gomez Albarracin, F Contreras, M S Sutherland,James W Cronin, H Glass, S Grebe,F Sarazin, Lenka Tomankova,William C Brown,Federico Sanchez,Hernan Wahlberg,Dave F Nitz,Pavel Horvath, R Meyhandan,Felix Werner,E Zas,A Filipcic,A Schmidt,J Chudoba,R Bardenet, S Micanovic,Esteban Roulet,M Castro,Enrique Varela,X Bertou,Francisco Salesa Greus, R M Kieckhafer,A Segreto,Carla Bonifazi, R Bruijn, M Melissas,Maurice Stephan, N Krohm, E Grashorn,L Cazon, J Brack, R Squartini,D Maurizio,Gero Muller,P Ristori,Angela V Olinto, S J Sciutto,Andrzej śmialkowski,O Wainberg,Michelangelo Ambrosio,Rogerio M De Almeida,K Weidenhaupt, P Necesal,L Perrone,H Wilczynski,M Bohacova,Ke Fang,J Ebr,Marek Szuba, Gonzalo De La Vega,A N Yushkov,R Smida, C Macolino, Larry Buroker,L Villasenor,S Barroso, B Caccianiga,A Weindl,Joao De Mello Neto,Petr Travnicek, L Niemietz,A Gorgi, R E Burton,Carlos J Todero Peixoto,Joerg Horandel,M Ahlers,J Diaz,I Allekotte, S Dagoretcampagne,Hermannjosef Mathes,M Rio, Hal Spinka,Krijn De Vries,Ralph Engel,O Catalano, Pedro Facal San Luis,K Becker, A G Mariazzi,David Walz, M Pontz,F Blanco, S Fliescher,S Benzvi, J Gitto, H Gemmeke,J L Harton, M R Coluccia, Adrienne Criss,P Schovanek,Sayri Tupac Garcia Roca,J Tiffenberg, G Garilli,Detlef Maurel,N Dhital,K Link,D Harari,Biswaijt Sarkar, C Ruhle, M D Rodriguezfrias,P M Mantsch, C Pfendner,M Erdmann,R Sato,M Oliveira,P Allison, P Karhan,Guofeng Yuan,Miguel Angel Del Arco Blanco,A Saftoiu,Markus Roth,J Bauml,P Lautridou, Primo F Gomez Vitale,A Daniel Supanitsky,Ivan De Mitri,W Carvalho
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES（2012）
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摘要
A thorough search for large-scale anisotropies in the distribution of arrival directions of cosmic rays detected above 10(18) eV at the Pierre Auger Observatory is presented. This search is performed as a function of both declination and right ascension in several energy ranges above 10(18) eV, and reported in terms of dipolar and quadrupolar coefficients. Within the systematic uncertainties, no significant deviation from isotropy is revealed. Assuming that any cosmic-ray anisotropy is dominated by dipole and quadrupole moments in this energy range, upper limits on their amplitudes are derived. These upper limits allow us to test the origin of cosmic rays above 10(18) eV from stationary Galactic sources densely distributed in the Galactic disk and predominantly emitting light particles in all directions.
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关键词
astroparticle physics,cosmic rays
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