Large Scale Distribution of Ultra High Energy Cosmic Rays Detected at the Pierre Auger Observatory With Zenith Angles up to 80°
Alexander Aab, Diego Torres Machado,N Borodai,G P Guedes, J Neuser,Vladimir Novotny,R Lauer,M Ave,I M Brancus, D Kruppkehansen,Luis Del Peral,A Dorofeev,C Timmermans,Bruno Daniel,J Pallotta,P Sanchezlucas,Corinne Berat,Milton Leao,Sergio Navas, D Melo,S Querchfeld, M Kleifges,R Cester,Stephane Coutu,Sebastian Hartmann,Martin Urban,I M Pepe,M Risse,A C Fauth, Brian Vlcek, A Menshikov,F Salamida,N Kunka,F Montanet,B Kegl,Sjoert Van Velzen, R Dallier,Gualberto Avila,A Almela,M Giller,N Scharf,Ahmed Saleh,D Ravignani,S Muller, Lukas Middendorf, J Kleinfeller,Tokonatsu Yamamoto,P Pieroni, P Lebrun,V Pirronello, R Piegaia,V Verzi, Alberto Gascon Bravo,R Bonino, T Hebbeker, B Wilczynska,Laura Collica,Brendan Fox,A Bueno,M S Sutherland,J C Dolivo,Rafael Alves Batista, D Wittkowski, Patrick Van Bodegom,A Filevich,Arnulfo Zepeda,Ivone F M Albuquerque,R Smida,Marianne Ludwig, A Haungs,S Petrera,D Garciapinto,I Sidelnik,Detlef Maurel,P G Isar,G Cocciolo, W Docters, C Morello,A Widom,H Dembinski,Manlio De Domenico,C Dobrigkeit, P Papenbreer,D Mandat,Jing Zhou,M Palatka,Yevgeniy Petrov,B Tome,P Billoir,Patricia Goncalves,F Arqueros,James Stapleton,L Miramonti,Patricia Hansen, Raphael Krause,Gianni Navarra,O Deligny, S Mathys,Lyberis Nožka, M Avenier,C Jarne,R Mussa, Ariel Bridgeman,A Castellina,David P Schmidt,Eunjoo Ahn,J Diaz, M Candusso,K B Barber,R Gaior,Anne Stutz,H Salazar,J Alvarezmuniz,Oscar Martinez Bravo,R Pelayo,Stefan Jansen,D Veberic,Roberta Colalillo,Johannes Schulz,K Daumiller,A P Ferguson,C Escobar,J Stasielak,C Bleve,J Pekala,F Gate,Rebecca Meissner,H Asorey, Dmytro Rogozin,A Herve,Jose Chinellato,Claudio Di Giulio, A Shadkam,Pedro Assis,H Schoorlemmer,N Fazzini,I Katkov, G Medinatanco,Sean Quinn,Dieter Heck,Guus Van Aar,Federico Suarez,Miroslav Hrabovský,J Vicha, M Aglietta,Petr Travnicek, Simon G Blaess, B Caccianiga,Johannes Schumacher,T Yapici,Lilian Martin,Guillermo Torralba Elipe,Ad M Van Den Berg,P Schiffer,Yue Zhu, C Porowski, V M Theodoro,M Ziolkowski,Toshihiro Fujii,K S Caballeromora,S Stanic,C E Santo,Marc Weber,R C Shellard,Peter Mazur, E Trovato,A Aminaei, P Buchholz, Mathew J Cooper,P L Ghia,Simone Riggi, Olga Kambeitz,Julio Lozano Bahilo, J Sorokin,O Sima, O A Taborda,G Salina, M Erdmann,Silvia Mollerach, Sandra Le Coz,V Scherini,M Giammarchi,L Caccianiga,N Hollon,P Gouffon,J R Vazquez,Ewa Holt, M Monasor, M Cilmo,German Ros,R Ulrich, G R Snow,G Cataldi, Philipp Heimann,M Pimenta,M Munchmeyer,R W Clay,I C Maris, Jorge Ruben Rodriguez Rojo,C E Covault,M Niechciol,Alain Cordier, B Revenu,M Josebachuili,E Petermann, J Aublin,Michael Unger,Alejandra Parra,Foteini Oikonomou,H Schieler,B E Fick, Bernardo Vargas Cardenas,Manuela Mallamaci,Humberto Martinez,A Insolia,D Garciagamez,Miguel Mostafa,Jacob Gordon,Diane Martraire,D Boncioli,S Vorobiov,M Buscemi, M Erfani,Raul Sarmento,Esteban Roulet,Lu Lu,Rebeca Lopez,J A Bellido,Arjen Van Vliet,Ruben Conceicao,Christopher S Williams,Paul Sommers,A Keivani,M L Fernandes,M T Dova,Fausto Guarino, A Curutiu,Sofia Andringa, K Louedec,E J Quel, K H Kampert,Glennys R S Farrar,L Wiencke, J A J Matthews, B Keilhauer, U Frohlich,S Dasso,Ernesto Kemp,B Mitrica, Delphine Monnier Ragaigne,Alex Tapia,I Valino,A Letessierselvon,Alan Watson, Jimmy Masias Meza,M Muller,Mariano Gomez Berisso,H O Klages, P H Kasper,D Zavrtanik, Jennifer Maller,G Varner,Benjamin Fuchs, Jose F Valdes Galicia,Stefano Messina,Christine Peters,Phong H Nguyen,J Rautenberg, V M Aranda, Gabriel Toma, D Kuempel,Sijbrand J De Jong,P Brogueira,N Griffith, U Giaccari,V Rizi, M Videla,Vitor De Souza,O Scholten,Ricardo A Vazquez,Peter L Biermann,Miroslav Pech, M Platino,C Hojvat,Edivaldo Moura Santos,Beatriz Amante Garcia,G Parente,H Falcke,Matthias Plum, T A Harrison,M Settimo,Francesca Zuccarello,S Buitink, L Valore,J Espadanal,V Purrello,H Blumer,Jaime Rosado,J J Beatty,M Zavrtanik,Noelia Pacheco,T Winchen,A Schulz,Danielle Lahurd,Daniel Huber,P W Gorham, Colin Baus, J Phuntsok, F Diogo, I Lhenryyvon,L Molinabueno, Y N Srivastava, Marcelo Zimbres Silva, M Prouza,Qader Dorosti Hasankiadeh, A Chiavassa,A F Grillo,Imen Al Samarai,Z Szadkowski,J Ridky,Laurentiu Caramete,Alan Coleman,Trent D Grubb,Jeff Allen,P Privitera,Nicolas Gonzalez, A Porcelli,M Hampel,T Rossler, T Suomijarvi,Bruce R Dawson, A C Rovero, Martin Miguel Freire,Luis A Anchordoqui,L Latronico,Guenter Sigl,T Pierog,G Marsella, A Etchegoyen, Nafiun Awal,N Palmieri,Javier Gonzalez, D Lebrun,A Nelles,J Castillo,T Huege,Agustin Lucero,G Hill,Jaime De Oliveira,Vincent Marin,L Nellen,O Kromer, B Wundheiler,J D Swain,Daniel Pakk Selmidei, Carlos Medina,Octavian Fratu,Markus Lauscher,J M Figueira,S Maldera,C Aramo,Rossella Caruso,Piotr Homola,O Ravel,A M Badescu,G Matthiae,D Nosek, B Gookin,C A Moura, Steven J Saffi, I Jandt,F Contreras,James W Cronin, H Glass, M Bertaina,F Sarazin, Lenka Tomankova,William C Brown, A Tonachini,Federico Sanchez,Hernan Wahlberg,Dave F Nitz,Raul Ribeiro Prado,Pavel Horvath,Armando Di Matteo, R Meyhandan,Felix Werner, J R Horandel,E Zas,A Filipcic,O Wainberg,J Chudoba,A N Yushkov,S Micanovic,M Castro,Enrique Varela,X Bertou,Francisco Salesa Greus,A Segreto,Carla Bonifazi, M Melissas,Maurice Stephan, N Krohm, J Brack, R Squartini,D Maurizio,Christian Glaser,Gero Muller,P Ristori,Angela V Olinto,S J Sciutto,Andrzej śmialkowski,Michelangelo Ambrosio,Rogerio M De Almeida, K Weidenhaupt, P Necesal,L Perrone,H Wilczynski, M Bohacova,Ke Fang,J Ebr,Marek Szuba,L Villasenor,A Weindl, S Wykes,Joao De Mello Neto,Eric Mayotte,P Abreu, L Niemietz,A Gorgi,Carlos J Todero Peixoto,Daniele Martello,I Allekotte,Hermannjosef Mathes,I A Minaya,Ralph Engel, G Fernandez,L Ochilo, Pedro Facal San Luis,K Becker,A G Mariazzi,David Walz, Alan G Chavez,T Paul,R M Kieckhafer, H Gemmeke,J L Harton,Bruno Zamorano,A Tepe, M R Coluccia, Alex Kaapa,P Schovanek, G Garilli, M I Micheletti,N Dhital,K Link,D Harari,Biswaijt Sarkar,M D Rodriguezfrias,P M Mantsch, S Grebe,R Sato,M Oliveira,Max Malacari,P Allison,L Cazon,Guofeng Yuan, M E Blanco,A Saftoiu,Markus Roth,J Bauml,P Lautridou, Primo F Gomez Vitale,A Daniel Supanitsky,Ivan De Mitri,W Carvalho,Tim Niggemann
ASTROPHYSICAL JOURNAL（2015）
引用 74|浏览110
摘要
We present the results of an analysis of the large angular scale distribution of the arrival directions of cosmic rays with energy above 4 EeV detected at the Pierre Auger Observatory including for the first time events with zenith angle between 60 degrees and 80 degrees. We perform two Rayleigh analyses, one in the right ascension and one in the azimuth angle distributions, that are sensitive to modulations in right ascension and declination, respectively. The largest departure from isotropy appears in the E > 8 EeV energy bin, with an amplitude for the first harmonic in right ascension r(1)(alpha) = (4.4 +/- 1.0) x 10(-2), that has a chance probability P(>= r(1)(alpha)) = 6.4 x 10(-5), reinforcing the hint previously reported with vertical events alone.
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关键词
astroparticle physics,cosmic rays
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