Update on the correlation of the highest energy cosmic rays with nearby extragalactic matter

被引：267

作者：

Abreu, P. ^{[70
,71
]}

Aglietta, M. ^{[55
,58
]}

Ahn, E. J. ^{[86
]}

Allard, D. ^{[27
]}

Allekotte, I. ^{[1
,2
]}

Allen, J. ^{[89
]}

Alvarez Castillo, J. ^{[63
]}

Alvarez-Muniz, J. ^{[79
]}

Ambrosio, M. ^{[48
,49
]}

Aminaei, A. ^{[64
]}

Anchordoqui, L. ^{[99
]}

Andringa, S. ^{[70
,71
]}

Anticlc, T. ^{[22
]}

Anzalone, A. ^{[57
]}

Aramo, C. ^{[48
,49
]}

Arganda, E. ^{[75
]}

Arisaka, K. ^{[94
]}

Arqueros, F. ^{[75
]}

Asorey, H. ^{[1
,2
]}

Assis, P. ^{[70
,71
]}

Aublin, J. ^{[29
]}

Ave, M. ^{[33
,95
]}

Avenier, M. ^{[30
]}

Avila, G. ^{[10
,11
]}

Baecker, T. ^{[39
]}

Badagnani, D. ^{[6
,7
]}

Balzer, M. ^{[34
]}

Barber, K. B. ^{[12
]}

Barbosa, A. F. ^{[13
]}

Bardenet, R. ^{[28
]}

Barroso, S. L. C. ^{[18
]}

Baughman, B. ^{[91
]}

Beatty, J. J. ^{[91
]}

Becker, B. R. ^{[97
]}

Becker, K. H. ^{[32
]}

Belletoile, A. ^{[30
]}

Bellido, J. A. ^{[12
]}

Berat, C. ^{[30
]}

Bergmann, T. ^{[34
]}

Bertou, X. ^{[1
,2
]}

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

Billoir, P. ^{[29
]}

Blanco, F. ^{[75
]}

Blanco, M. ^{[76
]}

Bleve, C. ^{[32
,46
,47
]}

Bluemer, H. ^{[33
,35
]}

Bohacoca, M. ^{[24
,95
]}

Boncioli, D. ^{[50
,51
]}

Bonifazi, C. ^{[21
,29
]}

Bonino, R. ^{[55
,58
]}

机构：

[1] Ctr Atom Bariloche, San Carlos De Bariloche, Rio Negro, Argentina

[2] Inst Balseiro CNEA UNCuyo CONICET, San Carlos De Bariloche, Rio Negro, Argentina

[3] Ctr Atom Constituyentes Comis Nacl Energia Atom C, Buenos Aires, DF, Argentina

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

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

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

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

[8] Inst Astron & Fis Espacio CONICET UBA, Buenos Aires, DF, Argentina

[9] Natl Technol Univ, Fac Mendoza CONICET CNEA, Mendoza, Argentina

[10] Pierre Auger So Observ, Malargue, Argentina

[11] Comis Nacl Energia Atom, Malargue, Argentina

[12] Univ Adelaide, Adelaide, SA, Australia

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

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

[15] Univ Sao Paulo, Inst Fis, Sao Carlos, SP, Brazil

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

[17] Univ Estadual Feira de Santana, Feira De Santana, Brazil

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

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

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

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

[22] Rudjer Boskovic Inst, Zagreb 10000, Croatia

[23] Charles Univ Prague, Fac Math & Phys, Inst Particle & Nucl Phys, Prague, Czech Republic

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

[25] Palacky Univ, CR-77147 Olomouc, Czech Republic

[26] Univ Paris 11, Inst Phys Nucl Orsay, CNRS IN2P3, Orsay, France

[27] Univ Paris 11, APC, CNRS IN2P3, Orsay, France

[28] Univ Paris 11, LAL, CNRS IN2P3, Orsay, France

[29] Univ Paris 06, LPNHE, CNRS IN2P3, Paris, France

[30] Univ Grenoble 1, LPSC, CNRS IN2P3, Grenoble, France

[31] CNRS IN2P3, SUBATECH, Nantes, France

[32] Berg Univ Wuppertal, Wuppertal, Germany

[33] Karlsruhe Inst Technol, Inst Kernphys, Karlsruhe, Germany

[34] Karlsruhe Inst Technol, Inst Prozessdatenverarbeitung & Elekt, Karlsruhe, Germany

[35] Karlsruhe Inst Technol, Inst Expt Kernphys, Karlsruhe, Germany

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

[37] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany

[38] Univ Hamburg, Hamburg, Germany

[39] Univ Siegen, Siegen, Germany

[40] Univ Genoa, Dipartimento Fis, Genoa, Italy

[41] Ist Nazl Fis Nucl, I-16146 Genoa, Italy

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

[43] INFN, Laquila, Italy

[44] Univ Milan, Milan, Italy

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

[46] Sezione Ist Nazl Fis Nucl, Lecce, Italy

[47] Univ Salento, Dipartimento Fis, Lecce, Italy

[48] Univ Naples Federico II, Naples, Italy

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

[50] Univ Roma II Tor Vergata, Rome, Italy

来源：

ASTROPARTICLE PHYSICS | 2010年 / 34卷 / 05期

基金：

美国国家科学基金会; 英国科学技术设施理事会; 巴西圣保罗研究基金会; 澳大利亚研究理事会;

关键词：

Cosmic rays; UHECR; Anisotropy; Pierre Auger Observatory; Extra-galactic; GZK; ACTIVE GALACTIC NUCLEI; HIPASS CATALOG; QUASARS;

D O I：

10.1016/j.astropartphys.2010.08.010

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Data collected by the Pierre Auger Observatory through 31 August 2007 showed evidence for anisotropy in the arrival directions of cosmic rays above the Greisen-Zatsepin-Kuz'min energy threshold, 6 x 10(19) eV. The anisotropy was measured by the fraction of arrival directions that are less than 3.1 degrees from the position of an active galactic nucleus within 75 Mpc (using the Veron-Cetty and Veron 12th catalog). An updated measurement of this fraction is reported here using the arrival directions of cosmic rays recorded above the same energy threshold through 31 December 2009. The number of arrival directions has increased from 27 to 69, allowing a more precise measurement. The correlating fraction is (38(-6)(+7))%, compared with 21% expected for isotropic cosmic rays. This is down from the early estimate of (69-(+11)(13))%. The enlarged set of arrival directions is examined also in relation to other populations of nearby extragalactic objects: galaxies in the 2 Microns All Sky Survey and active galactic nuclei detected in hard X-rays by the Swift Burst Alert Telescope. A celestial region around the position of the radiogalaxy Cen A has the largest excess of arrival directions relative to isotropic expectations. The 2-point autocorrelation function is shown for the enlarged set of arrival directions and compared to the isotropic expectation. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：314 / 326

页数：13

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