Using data collected at the Pierre Auger Observatory during the past 3.7 years, we demonstrated a correlation between the arrival directions of cosmic rays with energy above 6 x 10(19) electron volts and the positions of active galactic nuclei (AGN) lying within similar to 75 megaparsecs. We rejected the hypothesis of an isotropic distribution of these cosmic rays with at least a 99% confidence level from a prescribed a priori test. The correlation we observed is compatible with the hypothesis that the highest-energy particles originate from nearby extragalactic sources whose flux has not been substantially reduced by interaction with the cosmic background radiation. AGN or objects having a similar spatial distribution are possible sources.

Correlation of the highest-energy cosmic rays with nearby extragalactic objects

ARGIRO', Stefano;BONINO, Raffaella;CHIAVASSA, Andrea;GORGI, Alessio;MENICHETTI, Ezio;NAVARRA, Gianni Maria;TONACHINI, Aurelio Siro;
2007

Abstract

Using data collected at the Pierre Auger Observatory during the past 3.7 years, we demonstrated a correlation between the arrival directions of cosmic rays with energy above 6 x 10(19) electron volts and the positions of active galactic nuclei (AGN) lying within similar to 75 megaparsecs. We rejected the hypothesis of an isotropic distribution of these cosmic rays with at least a 99% confidence level from a prescribed a priori test. The correlation we observed is compatible with the hypothesis that the highest-energy particles originate from nearby extragalactic sources whose flux has not been substantially reduced by interaction with the cosmic background radiation. AGN or objects having a similar spatial distribution are possible sources.
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J. Abraham;P. Abreu;M. Aglietta;C. Aguirre;D. Allard;I. Allekotte;J. Allen;P. Allison;C. Alvarez;J. Alvarez-Muniz;M. Ambrosio;L. Anchordoqui;S. Andringa;A. Anzalone;C. Aramo;S. Argiro;K. Arisaka;E. Armengaud;F. Arneodo;F. Arqueros;T. Asch;H. Asorey;P. Assis;B. S. Atulugama;J. Aublin;M. Ave;G. Avila;T. Backer;D. Badagnani;A. F. Barbosa;D. Barnhill;S. L. C. Barroso;P. Bauleo;J. Beatty;T. Beau;B. R. Becker;K. H. Becker;J. A. Bellido;S. BenZvi;C. Berat;T. Bergmann;P. Bernardini;X. Bertou;P. L. Biermann;P. Billoir;O. Blanch-Bigas;F. Blanco;P. Blasi;C. Bleve;H. Blumer;M. Bohacova;C. Bonifazi;R. Bonino;M. Boratav;J. Brack;P. Brogueira;W. C. Brown;P. Buchholz;A. Bueno;N. G. Busca;K. S. Caballero-Mora;B. Cai;D. V. Camin;R. Caruso;W. Carvalho;A. Castellina;O. Catalano;G. Cataldi;L. Cazon-Boado;R. Cester;J. Chauvin;A. Chiavassa;J. A. Chinellato;A. Chou;J. Chye;P. D. J. Clark;R. W. Clay;E. Colombo;R. Conceicao;B. Connolly;F. Contreras;J. Coppens;A. Cordier;U. Cotti;S. Coutu;C. E. Covault;A. Creusot;J. Cronin;S. Dagoret-Campagne;K. Daumiller;B. R. Dawson;R. M. de Almeida;C. D. Donato;S. J. de Jong;G. D. la Vega;J. M. de Mello;J. R. T. de Mello;I. D. Mitri;V. d. Souza;L. d. Peral;O. Deligny;A. D. Selva;C. D. Fratte;H. Dembinski;C. D. Giulio;J. C. Diaz;C. Dobrigkeit;J. C. D'Olivo;D. Dornic;A. Dorofeev;J. C. dos Anjos;M. T. Dova;D. D'Urso;M. A. DuVernois;R. Engel;L. Epele;M. Erdmann;C. O. Escobar;A. Etchegoyen;P. F. San Luis;H. Falcke;G. Farrar;A. C. Fauth;N. Fazzini;A. Fernandez;G. Farrar;A. C. Fauth;N. Fazzini;A. Fernandez;F. Ferrer;S. Ferry;B. Fick;A. Filevich;A. Filipcic;I. Fleck;R. Fonte;C. E. Fracchiolla;W. Fulgione;B. Garcia;D. G. Gamez;D. Garcia-Pinto;X. Garrido;H. Geenen;G. Gelmini;H. Gemmeke;P. L. Ghia;M. Giller;H. Glass;M. S. Gold;G. Golup;F. G. Albarracin;M. G. Berisso;R. G. Herrero;P. Goncalves;M. G. do Amaral;D. Gonzalez;J. G. Gonzalez;M. Gonzalez;D. Gora;A. Gorgi;P. Gouffon;V. Grassi;A. Grillo;C. Grunfeld;Y. Guardincerri;F. Guarino;G. P. Guedes;J. Gutierrez;J. D. Hague;J. C. Hamilton;P. Hansen;D. Harari;S. Harmsma;J. L. Harton;A. Haungs;T. Hauschildt;M. D. Healy;T. Hebbeker;D. Heck;C. Hojvat;V. C. Holmes;P. Homola;J. Horandel;A. Horneffer;M. Horvat;M. Hrabovsky;T. Huege;M. Iarlori;A. Insolia;F. Ionita;A. Italiano;M. Kaducak;K. H. Kampert;B. Keilhauer;E. Kemp;R. M. Kieckhafer;H. O. Klages;M. Kleifges;J. Kleinfeller;R. Knapik;J. Knapp;D. H. Koang;A. Kopmann;A. Krieger;D. Kromer;D. Kumpel;N. Kunka;A. Kusenko;G. L. Rosa;C. Lachaud;B. L. Lago;D. Lebrun;P. LeBrun;J. Lee;M. A. Leigui de Oliveira;A. Letessier-Selvon;M. Leuthold;I. Lhenry-Yvon;R. Lopez;A. L. Aguera;J. L. Bahilo;M. C. Maccarone;C. Macolino;S. Maldera;M. Malek;G. Mancarella;M. E. Mancenido;D. Mandat;P. Mantsch;A. G. Mariazzi;I. C. Maris;D. Martello;J. Martinez;O. M. Bravo;H. J. Mathes;G. Matthiae;D. Maurizio;P. O. Mazur;T. McCauley;M. McEwen;R. R. McNeil;M. C. Medina;G. Medina-Tanco;A. Meli;D. Melo;E. Menichetti;A. Menschikov;C. Meurer;R. Meyhandan;M. I. Micheletti;G. Miele;W. Miller;S. Mollerach;M. Monasor;D. M. Ragaigne;F. Montanet;B. Morales;C. Morello;E. Moreno;J. C. Moreno;C. Morris;M. Mostafa;M. A. Muller;R. Mussa;G. Navarra;J. L. Navarro;S. Navas;L. Nellen;C. Newman-Holmes;D. Newton;T. N. Thi;N. Nierstenhofer;D. Nitz;D. Nosek;L. Nozka;J. Oehlschlager;T. Ohnuki;A. Olinto;V. M. Olmos-Gilbaja;M. Ortiz;S. Ostapchenko;L. Otero;D. P. Selmi-Dei;M. Palatka;J. Pallotta;G. Parente;E. Parizot;S. Parlati;S. Pastor;M. Patel;T. Paul;V. Pavlidou;K. Payet;M. Pech;J. Pekala;R. Pelayo;I. M. Pepe;L. Perrone;S. Petrera;P. Petrinca;Y. Petrov;D. P. Ngoc;D. P. Ngoc;T. N. P. Thi;A. Pichel;R. Piegaia;T. Pierog;M. Pimenta;T. Pinto;V. Pirronello;O. Pisanti;M. Platino;J. Pochon;T. A. Porter;P. Privitera;M. Prouza;E. J. Quel;J. Rautenberg;S. Reucroft;B. Revenu;F. A. S. Rezende;J. Ridky;S. Riggi;M. Risse;C. Riviere;V. Rizi;M. Roberts;C. Robledo;G. Rodriguez;D. Frias;J. R. Martino;J. R. Rojo;I. Rodriguez-Cabo;G. Ros;J. Rosado;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. M. Santos;F. Sarazin;S. Sarkar;R. Sato;V. Scherini;H. Schieler;F. Schmidt;T. Schmidt;O. Scholten;P. Schovanek;F. Schussler;S. J. Sciutto;M. Scuderi;A. Segreto;D. Semikoz;M. Settimo;R. C. Shellard;I. Sidelnik;B. B. Siffert;G. Sigl;N. S. De Grande;A. Smialkowski;R. Smida;A. G. K. Smith;B. E. Smith;G. R. Snow;P. Sokolsky;P. Sommers;J. Sorokin;H. Spinka;R. Squartini;E. Strazzeri;A. Stutz;F. Suarez;T. Suomijarvi;A. D. Supanitsky;M. S. Sutherland;J. Swain;Z. Szadkowski;J. Takahashi;A. Tamashiro;A. Tamburro;O. Tascau;R. Tcaciuc;D. Thomas;R. Ticona;J. Tiffenberg;C. Timmermans;W. Tkaczyk;C. J. Peixoto;B. Tome;A. Tonachini;D. Torresi;P. Travnicek;A. Tripathi;G. Tristram;D. Tscherniakhovski;M. Tueros;V. Tunnicliffe;R. Ulrich;M. Unger;M. Urban;J. F. V. Galicia;I. Valino;L. Valore;A. M. van den Berg;V. v. Elewyck;R. A. Vazquez;D. Veberic;A. Veiga;A. Velarde;T. Venters;V. Verzi;M. Videla;L. Villasenor;S. Vorobiov;L. Voyvodic;H. Wahlberg;O. Wainberg;T. Waldenmaier;P. Walker;D. Warner;A. A. Watson;S. Westerhoff;G. Wieczorek;L. Wiencke;B. Wilczynska;H. Wilczynski;C. Wileman;M. G. Winnick;H. Wu;B. Wundheiler;J. Xu;T. Yamamoto;P. Younk;E. Zas;D. Zavrtanik;M. Zavrtanik;A. Zech;A. Zepeda;M. Ziolkowski
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2318/67462
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