Correlation of the highest-energy cosmic rays with the positions of nearby active galactic nuclei

被引：326

作者：

Abraham, J.

Abreu, P. ^{[68
,69
]}

Aglietta, M. ^{[53
,54
]}

Aguirre, C. ^{[14
]}

Allard, D.

Allekotte, I. ^{[4
,5
]}

Allen, J. ^{[88
]}

Allison, P. ^{[90
]}

Alvarez-Muniz, J.

Ambrosio, M. ^{[57
]}

Anchordoqui, L. ^{[103
]}

Andringa, S. ^{[68
,69
]}

Anzalone, A. ^{[52
]}

Aramo, C. ^{[57
]}

Argiro, S. ^{[50
,51
]}

Arisaka, K. ^{[93
]}

Armengaud, E.

Arneodo, F.

Arqueros, F. ^{[73
]}

Asch, T. ^{[35
]}

Asorey, H. ^{[3
]}

Assis, P.

Atulugama, B. S. ^{[91
]}

Aublin, J. ^{[29
,30
]}

Ave, M.

Avila, G. ^{[11
,12
]}

Baecker, T. ^{[39
]}

Badagnani, D.

Barbosa, A. F. ^{[15
]}

Barnhill, D. ^{[93
]}

Barroso, S. L. C. ^{[19
]}

Bauleo, P.

Beatty, J. J.

Beau, T. ^{[27
]}

Becker, B. R. ^{[99
]}

Becker, K. H. ^{[33
]}

Bellido, J. A. ^{[91
]}

BenZvi, S. ^{[102
]}

Berat, C.

Bergmann, T. ^{[38
]}

Bernardini, P.

Bertou, X. ^{[3
]}

Biermann, P. L. ^{[36
]}

Billoir, P.

Blanch-Bigas, O. ^{[8
,9
]}

Blanco, F. ^{[73
]}

Blasi, P. ^{[40
,41
,56
,85
]}

Bleve, C.

Bluemer, H. ^{[38
]}

Bohacova, M. ^{[25
]}

机构：

[1] Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina

[2] CNEA, Ctr Atom Constituyentes, Buenos Aires, DF, Argentina

[3] Comis Nacl Energia Atom, Ctr Atom Bariloche, San Carlos De Bariloche, Rio Negro, Argentina

[4] Comis Nacl Energia Atom, Dept Fis, Ctr Atom Bariloche, San Carlos De Bariloche, Rio Negro, Argentina

[5] CNEA UNC, San Carlos De Bariloche, Rio Negro, Argentina

[6] Univ Buenos Aires, FCEyN, Dept Fis, RA-1053 Buenos Aires, DF, Argentina

[7] Natl Univ La Plata, Dept Fis, La Plata, Argentina

[8] Univ Nacl La Plata, IFLP, La Plata, Buenos Aires, Argentina

[9] Consejo Nacl Invest Cient & Tecn, La Plata, Buenos Aires, Argentina

[10] Consejo Nacl Invest Cient & Tecn, Inst Astron & Fis Espacio, RA-1033 Buenos Aires, DF, Argentina

[11] Peirre Auger So Observ, Malargie, Argentina

[12] Comis Nacl Energia Atom, Malargie, Argentina

[13] Univ Adelaide, Adelaide, SA, Australia

[14] Univ Catlolica Bolivia, La Paz, Bolivia

[15] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil

[16] Pontificia Univ Catolica Rio de Janeiro, Rio De Janeiro, Brazil

[17] Univ Sao Paulo, Inst Fis, BR-01498 Sao Paulo, Brazil

[18] Univ Estadual Campinas, IFGW, Campinas, SP, Brazil

[19] Univ Estadual Sudoeste Bahia, Vitoria Da Conquista, BA, Brazil

[20] Univ Fed Bahia, Salvador, BA, Brazil

[21] Univ Fed ABC, Santo Andre, SP, Brazil

[22] Univ Fed Rio de Janeiro, Inst Fis, Rio De Janeiro, Brazil

[23] Univ Fed Fluminense, Inst Fis, BR-24020 Niteroi, RJ, Brazil

[24] Charles Univ Prague, Inst Nucl & Particle Phys, Prague, Czech Republic

[25] Acad Sci Czech Republ, Inst Phys, Prague, Czech Republic

[26] Univ Paris Sud, Inst Nucl Phys, CNRS, IN2P3, Orsay, France

[27] Univ Paris 07, CNRS, IN2P3, Lab AstroPracticule & Cosmol, Paris, France

[28] Univ Paris 11, Lab Accelerateur Lineaire, Orsay, France

[29] Univ Paris 06, Lab Phys Nucl & Hautes Energies, Paris 05, France

[30] Univ Paris 07, CNRS, IN2P3, Paris 05, France

[31] Univ Grenoble 1, CNRS, IN2P3, Lab Phys Subatom & Cosmol, Grenoble, France

[32] INPG, Grenoble, France

[33] Berg Univ Wuppertal, Wuppertal, Germany

[34] Forschungszentrum Karlsruhe, Inst Kernphys, D-76021 Karlsruhe, Germany

[35] Forschungszentrum Karlsruhe, Inst Prozessdatenverarbeitung & Elekt, Karlsruhe, Germany

[36] Max Planck Inst Radioastron, D-5300 Bonn, Germany

[37] RWTH Aachem Univ III, Phys Inst A, Aachen, Germany

[38] Univ Karlsruhe, TH, Inst Expt Kernphys, IEKP, Karlsruhe, Germany

[39] Univ Siegen, Siegen, Germany

[40] Univ Aquila, I-67100 Laquila, Italy

[41] Sezione Ist Nazl Fis Nucl, I-67100 Laquila, Italy

[42] Univ Salento, Milan, Italy

[43] Sezione Ist Nazl Fis Nucl, Milan, Italy

[44] Univ Naples Federico II, Naples, Italy

[45] Sezione Ist Nazl Fis Nucl, Naples, Italy

[46] Univ Roma Tor Vergata, I-00173 Rome, Italy

[47] Sezione Ist Nazl Fis Nucl, I-00173 Rome, Italy

[48] Univ Catania, Catania, Italy

[49] Sezione Ist Nazl Fis Nucl, Catania, Italy

[50] Univ Turin, Turin, Italy

来源：

ASTROPARTICLE PHYSICS | 2008年 / 29卷 / 03期

基金：

英国科学技术设施理事会; 美国国家科学基金会;

关键词：

high energy cosmic rays; UHECR; AGN; anisotropy; extra-galactic; auger; observatory; GZK; GMF; EGMF;

D O I：

10.1016/j.astropartphys.2008.01.002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Data collected by the Pierre Auger Observatory provide evidence for anisotropy in the arrival directions of the cosmic rays with the highest-energies, which are correlated with the positions of relatively nearby active galactic nuclei (AGN) [Pierre Auger Collaboration, Science 318 (2007) 938]. The correlation has maximum significance for cosmic rays with energy greater than similar to 6 x 10(19) eV and AGN at a distance less than similar to 75 Mpc. We have confirmed the anisotropy at a confidence level of more than 99% through a test with parameters specified a priori, using an independent data set. The observed correlation is compatible with the hypothesis that cosmic rays with the highest-energies originate from extra-galactic sources close enough so that their flux is not significantly attenuated by interaction with the cosmic background radiation (the Greisen-Zatsepin-Kuz'min effect). The angular scale of the correlation observed is a few degrees, which suggests a predominantly light composition unless the magnetic fields are very weak outside the thin disk of our galaxy. Our present data do not identify AGN as the sources of cosmic rays unambiguously, and other candidate sources which are distributed as nearby AGN are not ruled out. We discuss the prospect of unequivocal identification of individual sources of the highest-energy cosmic rays within a few years of continued operation of the Pierre Auger Observatory. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：188 / 204

页数：17

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