Correlation of the Highest-Energy Cosmic Rays with Nearby Extragalactic Objects
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 × 1019 electron volts and the positions of active galactic nuclei (AGN) lying within ∼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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References and Notes
1
J. Linsley, Phys. Rev. Lett.10, 146 (1963).
2
J. Abrahamet al. (Pierre Auger Collaboration), Nucl. Instrum. Methods A523, 50 (2004).
3
K. Greisen, Phys. Rev. Lett.16, 748 (1966).
4
G. T. Zatsepin, V. A. Kuzmin, Sov. Phys. JETP Lett.4, 78 (1966).
5
V. S. Berezinsky, S. I. Grigorieva, Astron. Astrophys.199, 1 (1988).
6
N. Hayashidaet al., Phys. Rev. Lett.77, 1000 (1996).
7
R. U. Abbasiet al., The HiRes collaboration. Astrophys. J.610, L73 (2004).
8
T. Stanev, P. L. Biermann, J. Lloyd-Evans, J. P. Rachen, A. A. Watson, Phys. Rev. Lett.75, 3056 (1995).
9
Y. Uchihori, M. Nagano, M. Takeda, M. Teshima, J. Lloyd-Evans and A.A. Watson, Astropart. Phys.13, 151 (2000).
10
V. L. Ginzburg, S. I. Syrovatskii, The Origin of Cosmic Rays (Pergamon, Oxford, 1964).
11
A. M. Hillas, Annu. Rev. Astron. Astrophys.22, 425 (1984).
12
M.-P. Véron-Cetty, P. Véron, Astron. Astrophys.455, 773 (2006).
13
D. Allardet al. (Pierre Auger Collaboration), Astrophysics, available at http://arxiv.org/abs/astro-ph/0511104.
14
C. Bonifazi, A. Letessier-Selvon, E. M. Santos, Astrophysics, available at http://arxiv.org/abs/0705.1856.
15
C. Bonifazi (Pierre Auger Collaboration), in Proceedings of the 29th International Cosmic Ray Conference, Pune, India (Tata Institute of Fundamental Research, India, 2005), vol. 17, pp. 17–20.
16
M. Ave (Auger Collaboration), Astrophysics, available at http://arxiv.org/abs/0709.2125.
17
M. Roth (Pierre Auger Collaboration), Astrophysics, available at http://arxiv.org/abs/0706.2096.
18
B. R. Dawson (Pierre Auger Collaboration), Astrophysics, available at http://arxiv.org/abs/0706.1105.
19
A redshift z corresponds to a distance 42 Mpc × (z/0.01) for a Hubble constant H0 = 71 km s–1 Mpc–1.
20
R. W. Clay (Pierre Auger Collaboration), in Proceedings of the 28th International Cosmic Ray Conference, Tsukuba, Japan (Universal Academic Press, Tokyo, Japan, 2003), vol. 1, pp. 421–424
21
B. Revenu, (Pierre Auger Collaboration), Proceedings of the 29th International Cosmic Ray Conference (2005), Pune, India, 75.
22
J. L. Han, R. N. Manchester, A. G. Lyne, G. J. Qiao, W. van Straten, Astrophys. J.642, 868 (2006).
23
S. Mollerach (Pierre Auger Collaboration), Astrophysics, available at http://arxiv.org/abs/0706.1749.
24
We are grateful to the following agencies and organizations for financial support: Gobierno De La Provincia de Mendoza, Comisión Nacional de Energía Atómica, Municipalidad de Malargüe, Fundación Antorchas, Argentina; the Australian Research Council; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Financiadora de Estudos e Projetos do Ministerio da Ciencia e Tecnologia (FINEP/MCT), Fundação de Amparo à Pesquisa do Estado de Rio de Janeiro (FAPERJ), Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP), Brazil; Ministry of Education, Youth and Sports of the Czech Republic; Centre National de la Recherche Scientifique (CNRS), Conseil Régional Ile-de-France, Département Physique Nucléaire et Corpusculaire (PNC-IN2P3/CNRS), Département Sciences de l'Univers (SDU-INSU/CNRS), France; Bundesministerium für Bildung und Forschung (BMBF), Deutsche Forschungsgemeinschaft (DFG), Finanzministerium Baden-Württemberg, Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Ministerium für Wissenschaft und Forschung, Nordrhein Westfalen, Ministerium für Wissenschaft, Forschung und Kunst, Baden-Württemberg, Germany; Istituto Nazionale di Fisica Nucleare (INFN), Ministero dell'Istruzione, dell'Università e della Ricerca (MIUR), Italy; Consejo Nacional de Ciencia y Tecnología (CONACYT), Mexico; Ministerie van Onderwijs, Cultuur en Wetenschap, Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Stichting voor Fundamenteel Onderzoek der Materie (FOM), Netherlands; Ministry of Science and Higher Education, Poland; Fundação para a Ciência e a Tecnologia, Portugal; Ministry for Higher Education, Science, and Technology, Slovenian Research Agency, Slovenia; Comunidad de Madrid, Consejería de Educacíon de la Comunidad de Castilla La Mancha, FEDER funds, Ministerio de Educacíon y Ciencia, Xunta de Galicia, Spain; Science and Technology Facilities Council, UK; Department of Energy, National Science Foundation, The Grainger Foundation, USA; América Latina Formación Académica–European Community/High Energy Physics Latin-American European Network, and UNESCO.
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Science
Volume 318 | Issue 5852
9 November 2007
9 November 2007
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American Association for the Advancement of Science.
Submission history
Received: 1 October 2007
Accepted: 23 October 2007
Published in print: 9 November 2007
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