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Electron and positron fluxes in primary cosmic rays measured with the alpha magnetic spectrometer on the international space station

  • M. Aguilar
  • , D. Aisa
  • , A. Alvino
  • , G. Ambrosi
  • , K. Andeen
  • , L. Arruda
  • , N. Attig
  • , P. Azzarello
  • , A. Bachlechner
  • , F. Barao
  • , A. Barrau
  • , L. Barrin
  • , A. Bartoloni
  • , L. Basara
  • , M. Battarbee
  • , R. Battiston
  • , J. Bazo
  • , U. Becker
  • , M. Behlmann
  • , B. Beischer
  • J. Berdugo, B. Bertucci, G. Bigongiari, V. Bindi, S. Bizzaglia, M. Bizzarri, G. Boella, W. De Boer, K. Bollweg, V. Bonnivard, B. Borgia, S. Borsini, M. J. Boschini, M. Bourquin, J. Burger, F. Cadoux, X. D. Cai, M. Capell, S. Caroff, J. Casaus, V. Cascioli, G. Castellini, I. Cernuda, F. Cervelli, M. J. Chae, Y. H. Chang, A. I. Chen, H. Chen, G. M. Cheng, H. S. Chen, L. Cheng, A. Chikanian, H. Y. Chou, E. Choumilov, V. Choutko, C. H. Chung, C. Clark, R. Clavero, G. Coignet, C. Consolandi, A. Contin, C. Corti, B. Coste, Z. Cui, M. Dai, C. Delgado, S. Della Torre, M. B. Demirköz, L. Derome, S. Di Falco, L. Di Masso, F. Dimiccoli, C. Díaz, P. Von Doetinchem, W. J. Du, M. Duranti, D. D'Urso, A. Eline, F. J. Eppling, T. Eronen, Y. Y. Fan, L. Farnesini, J. Feng, E. Fiandrini, A. Fiasson, E. Finch, P. Fisher, Y. Galaktionov, G. Gallucci, B. García, R. García-López, H. Gast, I. Gebauer, M. Gervasi, A. Ghelfi, W. Gillard, F. Giovacchini, P. Goglov, J. Gong, C. Goy, V. Grabski, D. Grandi, M. Graziani, C. Guandalini, I. Guerri, K. H. Guo, M. Habiby, S. Haino, K. C. Han, Z. H. He, M. Heil, J. Hoffman, T. H. Hsieh, Z. C. Huang, C. Huh, M. Incagli, M. Ionica, W. Y. Jang, H. Jinchi, K. Kanishev, G. N. Kim, K. S. Kim, Th Kirn, R. Kossakowski, O. Kounina, A. Kounine, V. Koutsenko, M. S. Krafczyk, S. Kunz, G. La Vacca, E. Laudi, G. Laurenti, I. Lazzizzera, A. Lebedev, H. T. Lee, S. C. Lee, C. Leluc, H. L. Li, J. Q. Li, Q. Li, Q. Li, T. X. Li, W. Li, Y. Li, Z. H. Li, Z. Y. Li, S. Lim, C. H. Lin, P. Lipari, T. Lippert, D. Liu, H. Liu, T. Lomtadze, M. J. Lu, Y. S. Lu, K. Luebelsmeyer, F. Luo, J. Z. Luo, S. S. Lv, R. Majka, A. Malinin, C. Mañá, J. Marín, T. Martin, G. Martínez, N. Masi, D. Maurin, A. Menchaca-Rocha, Q. Meng, D. C. Mo, L. Morescalchi, P. Mott, M. Müller, J. Q. Ni, N. Nikonov, F. Nozzoli, P. Nunes, A. Obermeier, A. Oliva, M. Orcinha, F. Palmonari, C. Palomares, M. Paniccia, A. Papi, E. Pedreschi, S. Pensotti, R. Pereira, F. Pilo, A. Piluso, C. Pizzolotto, V. Plyaskin, M. Pohl, V. Poireau, E. Postaci, A. Putze, L. Quadrani, X. M. Qi, P. G. Rancoita, D. Rapin, J. S. Ricol, I. Rodríguez, S. Rosier-Lees, A. Rozhkov, D. Rozza, R. Sagdeev, J. Sandweiss, P. Saouter, C. Sbarra, S. Schael, S. M. Schmidt, D. Schuckardt, A. Schulz Von Dratzig, G. Schwering, G. Scolieri, E. S. Seo, B. S. Shan, Y. H. Shan, J. Y. Shi, X. Y. Shi, Y. M. Shi, T. Siedenburg, D. Son, F. Spada, F. Spinella, W. Sun, W. H. Sun, M. Tacconi, C. P. Tang, X. W. Tang, Z. C. Tang, L. Tao, D. Tescaro, Samuel C.C. Ting, S. M. Ting, N. Tomassetti, J. Torsti, C. Türkoʇlu, T. Urban, V. Vagelli, E. Valente, C. Vannini, E. Valtonen, S. Vaurynovich, M. Vecchi, M. Velasco, J. P. Vialle, L. Q. Wang, Q. L. Wang, R. S. Wang, X. Wang, Z. X. Wang, Z. L. Weng, K. Whitman, J. Wienkenhöver, H. Wu, X. Xia, M. Xie, S. Xie, R. Q. Xiong, G. M. Xin, N. S. Xu, W. Xu, Q. Yan, J. Yang, M. Yang, Q. H. Ye, H. Yi, Y. J. Yu, Z. Q. Yu, S. Zeissler, J. H. Zhang, M. T. Zhang, X. B. Zhang, Z. Zhang, Z. M. Zheng, H. L. Zhuang, V. Zhukov, A. Zichichi, N. Zimmermann, P. Zuccon, C. Zurbach
  • Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
  • National Institute for Nuclear Physics
  • University of Perugia
  • KIT
  • Laboratório de Instrumentação e Física Experimental de Partículas
  • Research Centre Jülich
  • University of Geneva
  • RWTH Aachen University
  • Université Grenoble Alpes
  • European Organization for Nuclear Research (CERN)
  • Université Savoie Mont Blanc
  • University of Trento
  • University of Turku
  • Massachusetts Institute of Technology
  • INFN-Sezione di Pisa
  • Università di Pisa
  • University of Hawaii
  • Piazza della Scienza
  • University of Milan - Bicocca
  • NASA Johnson Space Center
  • University of Rome La Sapienza
  • Italian National Research Council-IGAG
  • Ewha Womans University
  • National Central University
  • CAS - Institute of High Energy Physics
  • Shandong University
  • Yale University
  • Instituto de Astrofísica de Canarias
  • University of Bologna
  • Institute of Electrical Engineering, Chinese Academy of Sciences
  • Middle East Technical University (METU)
  • Academia Sinica - Institute of Physics
  • Southeast University
  • Universidad Nacional Autónoma de México
  • Sun Yat-Sen University
  • Chung-shan Institute of Science and Technology Taiwan
  • Kyungpook National University
  • Beihang University
  • University of Maryland, College Park
  • Shanghai Jiao Tong University
  • Laboratoire Univers et Particules de Montpellier

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542 Citas (Scopus)

Resumen

Precision measurements by the Alpha Magnetic Spectrometer on the International Space Station of the primary cosmic-ray electron flux in the range 0.5 to 700 GeV and the positron flux in the range 0.5 to 500 GeV are presented. The electron flux and the positron flux each require a description beyond a single power-law spectrum. Both the electron flux and the positron flux change their behavior at ∼30GeV but the fluxes are significantly different in their magnitude and energy dependence. Between 20 and 200 GeV the positron spectral index is significantly harder than the electron spectral index. The determination of the differing behavior of the spectral indices versus energy is a new observation and provides important information on the origins of cosmic-ray electrons and positrons.

Idioma originalInglés
Número de artículo121102
PublicaciónPhysical Review Letters
Volumen113
N.º12
DOI
EstadoPublicada - 18 set. 2014
Publicado de forma externa

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