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Precision Measurement of the Proton Flux in Primary Cosmic Rays from Rigidity 1 GV to 1.8 TV with the Alpha Magnetic Spectrometer on the International Space Station.
Aguilar, M; Aisa, D; Alpat, B; Alvino, A; Ambrosi, G; Andeen, K; Arruda, L; Attig, N; Azzarello, P; Bachlechner, A; Barao, F; Barrau, A; Barrin, L; Bartoloni, A; Basara, L; Battarbee, M; Battiston, R; Bazo, J; Becker, U; Behlmann, M; Beischer, B; Berdugo, J; Bertucci, B; Bigongiari, G; Bindi, V; Bizzaglia, S; Bizzarri, M; Boella, G; de Boer, W; Bollweg, K; Bonnivard, V; Borgia, B; Borsini, S; Boschini, M J; Bourquin, M; Burger, J; Cadoux, F; Cai, X D; Capell, M; Caroff, S; Casaus, J; Cascioli, V; Castellini, G; Cernuda, I; Cerreta, D; Cervelli, F; Chae, M J; Chang, Y H; Chen, A I; Chen, H.
Affiliation
  • Aguilar M; Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain.
  • Aisa D; INFN Sezione di Perugia, I-06100 Perugia, Italy.
  • Alpat B; Università di Perugia, I-06100 Perugia, Italy.
  • Alvino A; INFN Sezione di Perugia, I-06100 Perugia, Italy.
  • Ambrosi G; INFN Sezione di Perugia, I-06100 Perugia, Italy.
  • Andeen K; INFN Sezione di Perugia, I-06100 Perugia, Italy.
  • Arruda L; Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany.
  • Attig N; Laboratório de Instrumentação e Física Experimental de Partículas (LIP), P-1000 Lisboa, Portugal.
  • Azzarello P; Jülich Supercomputing Centre and JARA-FAME, Research Centre Jülich, D-52425 Jülich, Germany.
  • Bachlechner A; DPNC, Université de Genève, CH-1211 Genève 4, Switzerland.
  • Barao F; INFN Sezione di Perugia, I-06100 Perugia, Italy.
  • Barrau A; I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany.
  • Barrin L; Laboratório de Instrumentação e Física Experimental de Partículas (LIP), P-1000 Lisboa, Portugal.
  • Bartoloni A; Laboratoire de Physique Subatomique et de Cosmologie (LPSC), CNRS/IN2P3 and Université Grenoble-Alpes, F-38026 Grenoble, France.
  • Basara L; European Organization for Nuclear Research (CERN), CH-1211 Geneva 23, Switzerland.
  • Battarbee M; INFN Sezione di Roma 1, I-00185 Roma, Italy.
  • Battiston R; Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie Mont Blanc, F-74941 Annecy-le-Vieux, France.
  • Bazo J; INFN TIFPA and Università di Trento, I-38123 Povo, Trento, Italy.
  • Becker U; Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland.
  • Behlmann M; INFN TIFPA and Università di Trento, I-38123 Povo, Trento, Italy.
  • Beischer B; INFN Sezione di Perugia, I-06100 Perugia, Italy.
  • Berdugo J; Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA.
  • Bertucci B; Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA.
  • Bigongiari G; I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany.
  • Bindi V; Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain.
  • Bizzaglia S; INFN Sezione di Perugia, I-06100 Perugia, Italy.
  • Bizzarri M; Università di Perugia, I-06100 Perugia, Italy.
  • Boella G; INFN Sezione di Pisa, I-56100 Pisa, Italy.
  • de Boer W; Università di Pisa, I-56100 Pisa, Italy.
  • Bollweg K; Physics and Astronomy Department, University of Hawaii, Honolulu, Hawaii 96822, USA.
  • Bonnivard V; INFN Sezione di Perugia, I-06100 Perugia, Italy.
  • Borgia B; INFN Sezione di Perugia, I-06100 Perugia, Italy.
  • Borsini S; Università di Perugia, I-06100 Perugia, Italy.
  • Boschini MJ; INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy.
  • Bourquin M; Università di Milano-Bicocca, I-20126 Milano, Italy.
  • Burger J; Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology (KIT), D-76128 Karlsruhe, Germany.
  • Cadoux F; National Aeronautics and Space Administration Johnson Space Center (JSC), and Jacobs-Sverdrup, Houston, Texas 77058, USA.
  • Cai XD; Laboratoire de Physique Subatomique et de Cosmologie (LPSC), CNRS/IN2P3 and Université Grenoble-Alpes, F-38026 Grenoble, France.
  • Capell M; INFN Sezione di Roma 1, I-00185 Roma, Italy.
  • Caroff S; Università di Roma La Sapienza, I-00185 Roma, Italy.
  • Casaus J; INFN Sezione di Perugia, I-06100 Perugia, Italy.
  • Cascioli V; INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy.
  • Castellini G; DPNC, Université de Genève, CH-1211 Genève 4, Switzerland.
  • Cernuda I; Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA.
  • Cerreta D; DPNC, Université de Genève, CH-1211 Genève 4, Switzerland.
  • Cervelli F; Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA.
  • Chae MJ; Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA.
  • Chang YH; Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), IN2P3/CNRS and Université de Savoie Mont Blanc, F-74941 Annecy-le-Vieux, France.
  • Chen AI; Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain.
  • Chen H; INFN Sezione di Perugia, I-06100 Perugia, Italy.
Phys Rev Lett ; 114(17): 171103, 2015 May 01.
Article in En | MEDLINE | ID: mdl-25978222
ABSTRACT
A precise measurement of the proton flux in primary cosmic rays with rigidity (momentum/charge) from 1 GV to 1.8 TV is presented based on 300 million events. Knowledge of the rigidity dependence of the proton flux is important in understanding the origin, acceleration, and propagation of cosmic rays. We present the detailed variation with rigidity of the flux spectral index for the first time. The spectral index progressively hardens at high rigidities.
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Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2015 Type: Article Affiliation country: Spain
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Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2015 Type: Article Affiliation country: Spain