Energy Spectrum of Cosmic-Ray Electrons at TeV Energies

被引：455

作者：

Aharonian, F. ^{[1
]}

Akhperjanian, A. G. ^{[2
]}

Barres de Almeida, U. ^{[8
]}

Bazer-Bachi, A. R. ^{[3
]}

Becherini, Y. ^{[12
]}

Behera, B. ^{[14
]}

Benbow, W. ^{[1
]}

Bernloehr, K. ^{[5
]}

Boisson, C. ^{[6
]}

Bochow, A. ^{[1
]}

Borrel, V. ^{[3
]}

Braun, I. ^{[1
]}

Brion, E. ^{[7
]}

Brucker, J. ^{[16
]}

Brun, P. ^{[7
]}

Buehler, R. ^{[1
]}

Bulik, T. ^{[24
]}

Buesching, I. ^{[9
]}

Boutelier, T. ^{[17
]}

Carrigan, S. ^{[1
]}

Chadwick, P. M. ^{[8
]}

Charbonnier, A. ^{[19
]}

Chaves, R. C. G. ^{[1
]}

Cheesebrough, A. ^{[8
]}

Chounet, L. -M. ^{[10
]}

Clapson, A. C. ^{[1
]}

Coignet, G. ^{[11
]}

Costamante, L. ^{[1
]}

Dalton, M. ^{[5
]}

Degrange, B. ^{[10
]}

Deil, C. ^{[1
]}

Dickinson, H. J. ^{[8
]}

Djannati-Atai, A. ^{[12
]}

Domainko, W. ^{[1
]}

Drury, L. O'C. ^{[13
]}

Dubois, F. ^{[11
]}

Dubus, G. ^{[17
]}

Dyks, J. ^{[24
]}

Dyrda, M. ^{[28
]}

Egberts, K. ^{[1
]}

Emmanoulopoulos, D. ^{[14
]}

Espigat, P.

Farnier, C. ^{[15
]}

Feinstein, F. ^{[15
]}

Fiasson, A. ^{[15
]}

Foerster, A. ^{[1
]}

Fontaine, G. ^{[10
]}

Fuessling, M.

Gabici, S. ^{[13
]}

Gallant, Y. A. ^{[15
]}

机构：

[1] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

[2] Yerevan Phys Inst, Yerevan 375036, Armenia

[3] UPS, CNRS, Ctr Etud Spatiale Rayonnements, F-31029 Toulouse 4, France

[4] Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany

[5] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[6] Univ Paris Diderot, CNRS, Observ Paris, LUTH, F-92190 Meudon, France

[7] CE Saclay, IRFU DSM CEA, F-91191 Gif Sur Yvette, France

[8] Univ Durham, Dept Phys, Durham DH1 3LE, England

[9] North West Univ, Unit Space Phys, ZA-2520 Potchefstroom, South Africa

[10] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[11] CNRS, IN2P3, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France

[12] Univ Paris 07, CNRS, APC, F-75205 Paris 13, France

[13] Dublin Inst Adv Studies, Dublin 4, Ireland

[14] Heidelberg Univ, D-69117 Heidelberg, Germany

[15] Univ Montpellier 2, CNRS, IN2P3, Lab Phys Theor & Astroparticules, F-34095 Montpellier 5, France

[16] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany

[17] Univ Grenoble 1, CNRS, Lab Astrophys Grenoble, INSU, F-38041 Grenoble 9, France

[18] Univ Tubingen, Inst Astron & Astrophys, D-72076 Tubingen, Germany

[19] Univ Paris 07, Univ Paris 06, CNRS, IN2P3,LPNHE, F-75252 Paris 5, France

[20] Charles Univ Prague, Inst Particle & Nucl Phys, CR-18000 Prague 8, Czech Republic

[21] Ruhr Univ Bochum, Inst Theoret Phys, Lehrstuhl Weltraum & Astrophys 6, D-44780 Bochum, Germany

[22] Univ Namibia, Windhoek, Namibia

[23] Uniwersytet Jagiellonski, Obserwatorium Astron, Krakow, Poland

[24] Nicolaus Copernicus Astron Ctr, Warsaw, Poland

[25] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England

[26] Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia

[27] Nicolaus Copernicus Univ, Torun Ctr Astron, Torun, Poland

[28] Inst Fiz Jadrowej PAN, PL-31342 Krakow, Poland

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 26期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevLett.101.261104

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The very large collection area of ground-based gamma-ray telescopes gives them a substantial advantage over balloon or satellite based instruments in the detection of very-high-energy (> 600 GeV) cosmic-ray electrons. Here we present the electron spectrum derived from data taken with the High Energy Stereoscopic System (H.E.S.S.) of imaging atmospheric Cherenkov telescopes. In this measurement, the first of this type, we are able to extend the measurement of the electron spectrum beyond the range accessible to direct measurements. We find evidence for a substantial steepening in the energy spectrum above 600 GeV compared to lower energies.

引用

页数：5

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