Measurement of the energy spectrum of cosmic rays above 1018 eV using the Pierre Auger Observatory

被引：348

作者：

Abraham, J. ^{[10
]}

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

Aglietta, M. ^{[55
,56
]}

Ahn, E. J. ^{[87
]}

Allard, D. ^{[29
]}

Allen, J. ^{[90
]}

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

Ambrosio, M. ^{[49
,50
]}

Anchordoqui, L. ^{[101
]}

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

Anticic, T. ^{[24
]}

Anzalone, A. ^{[58
]}

Aramo, C. ^{[49
,50
]}

Arganda, E. ^{[75
]}

Arisaka, K. ^{[95
]}

Arqueros, F. ^{[75
]}

Asorey, H. ^{[3
,4
]}

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

Aublin, J. ^{[31
]}

Ave, M. ^{[1
,96
]}

Avila, G. ^{[12
]}

Baecker, T. ^{[40
]}

Badagnani, D. ^{[7
,8
]}

Balzer, M. ^{[35
]}

Barber, K. B. ^{[13
]}

Barbosa, A. F. ^{[14
]}

Barroso, S. L. C. ^{[20
]}

Baughman, B. ^{[92
]}

Bauleo, P. ^{[85
]}

Beatty, J. J. ^{[92
]}

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

Becker, K. H. ^{[34
]}

Belletoile, A. ^{[32
]}

Bellido, J. A. ^{[13
]}

BenZvi, S. ^{[100
]}

Berat, C. ^{[32
]}

Bergmann, T. ^{[35
]}

Bertou, X. ^{[3
,4
]}

Biermann, P. L. ^{[37
]}

Billoir, P. ^{[31
]}

Blanch-Bigas, O. ^{[31
]}

Blanco, F. ^{[75
]}

Blanco, M. ^{[76
]}

Bleve, C. ^{[47
,48
]}

Bluemer, H. ^{[1
,36
]}

Bohacova, M. ^{[26
,96
]}

Boncioli, D. ^{[51
,52
]}

Bonifazi, C. ^{[23
,31
]}

Bonino, R. ^{[55
,56
]}

Borodai, N. ^{[68
]}

机构：

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

[2] Observ Pierre Auger, RA-5613 Malargue, Argentina

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

[4] Consejo Nacl Invest Cient & Tecn, UNCuyo, CNEA, San Carlos De Bariloche, Rio Negro, Argentina

[5] UTN FRBA, CONICET, Comis Nacl Energia Atom, Ctr Atom Constituyentes, Buenos Aires, DF, Argentina

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

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

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

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

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

[11] Pierre Auger So Observ, Malargue, Argentina

[12] Comis Nacl Energia Atom, Malargue, Argentina

[13] Univ Adelaide, Adelaide, SA, Australia

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

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

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

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

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

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

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

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

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

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

[24] Rudjer Boskovic Inst, Zagreb 10000, Croatia

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

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

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

[28] Univ Paris 11, CNRS, IN2P3, IPNO, F-91405 Orsay, France

[29] Univ Paris 07, CNRS, IN2P3, Lab AstroParticule & Cosmol APC, Paris, France

[30] Univ Paris 11, CNRS, IN2P3, F-91405 Orsay, France

[31] Univ Paris 06, LPNHE, Paris, France

[32] Univ Grenoble 1, CNRS, IN2P3, INPG,LPSC, Grenoble, France

[33] CNRS, IN2P3, SUBATECH, Nantes, France

[34] Berg Univ Wuppertal, Wuppertal, Germany

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

[36] Karlsruhe Inst Technol, Inst Expt Kernphys IEKP, Karlsruhe, Germany

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

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

[39] Univ Hamburg, Hamburg, Germany

[40] Univ Siegen, Siegen, Germany

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

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

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

[44] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, Laquila, Italy

[45] Univ Milan, Milan, Italy

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

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

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

[49] Univ Naples Federico II, Naples, Italy

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

来源：

PHYSICS LETTERS B | 2010年 / 685卷 / 4-5期

基金：

美国国家科学基金会;

关键词：

Pierre Auger Observatory; Cosmic rays; Energy spectrum; UPPER LIMIT; SURFACE DETECTOR; PHOTON FRACTION; SYSTEM;

D O I：

10.1016/j.physletb.2010.02.013

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report a measurement of the flux of cosmic rays with unprecedented precision and Statistics using the Pierre Auger Observatory Based on fluorescence observations in coincidence with at least one Surface detector we derive a spectrum for energies above 10(18) eV We also update the previously published energy spectrum obtained with the surface detector array The two spectra are combined addressing the systematic uncertainties and, in particular. the influence of the energy resolution on the spectral shape The spectrum can be described by a broken power law E-gamma with index gamma = 3 3 below the ankle which is measured at log(10)(E-ankle/eV) = 18 6 Above the ankle the spectrum is described by a power law with index 2 6 followed by a flux suppression, above about log(10)(E/eV) = 19 5, detected with high statistical significance (C) 2010 Elsevier B V All rights reserved

引用

页码：239 / 246

页数：8

共 50 条

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