Cosmic-ray electron-positron spectrum from 7 GeV to 2 TeV with the Fermi Large Area Telescope

作     者：S. Abdollahi M. Ackermann M. Ajello W. B. Atwood L. Baldini G. Barbiellini D. Bastieri R. Bellazzini E. D. Bloom R. Bonino T. J. Brandt J. Bregeon P. Bruel R. Buehler R. A. Cameron R. Caputo M. Caragiulo D. Castro E. Cavazzuti C. Cecchi A. Chekhtman S. Ciprini J. Cohen-Tanugi F. Costanza A. Cuoco S. Cutini F. D’Ammando F. de Palma R. Desiante S. W. Digel N. Di Lalla M. Di Mauro L. Di Venere P. S. Drell A. Drlica-Wagner C. Favuzzi W. B. Focke S. Funk P. Fusco F. Gargano D. Gasparrini N. Giglietto F. Giordano M. Giroletti D. Green L. Guillemot S. Guiriec A. K. Harding T. Jogler G. Jóhannesson T. Kamae M. Kuss G. La Mura L. Latronico F. Longo F. Loparco P. Lubrano S. Maldera D. Malyshev A. Manfreda M. N. Mazziotta P. F. Michelson N. Mirabal W. Mitthumsiri T. Mizuno A. A. Moiseev M. E. Monzani A. Morselli I. V. Moskalenko M. Negro E. Nuss E. Orlando D. Paneque J. S. Perkins M. Pesce-Rollins F. Piron G. Pivato T. A. Porter G. Principe S. Rainò R. Rando M. Razzano A. Reimer O. Reimer C. Sgrò D. Simone E. J. Siskind F. Spada G. Spandre P. Spinelli H. Tajima J. B. Thayer L. Tibaldo D. F. Torres E. Troja M. Wood A. Worley G. Zaharijas S. Zimmer 

作者机构：Department of Physical Sciences Hiroshima University Higashi-Hiroshima Hiroshima 739-8526 Japan Deutsches Elektronen Synchrotron DESY D-15738 Zeuthen Germany Department of Physics and Astronomy Clemson University Kinard Lab of Physics Clemson South Carolina 29634-0978 USA Santa Cruz Institute for Particle Physics Department of Physics and Department of Astronomy and Astrophysics University of California at Santa Cruz Santa Cruz California 95064 USA Università di Pisa and Istituto Nazionale di Fisica Nucleare Sezione di Pisa I-56127 Pisa Italy Istituto Nazionale di Fisica Nucleare Sezione di Trieste I-34127 Trieste Italy Dipartimento di Fisica Università di Trieste I-34127 Trieste Italy Istituto Nazionale di Fisica Nucleare Sezione di Padova I-35131 Padova Italy Dipartimento di Fisica e Astronomia “G. Galilei” Università di Padova I-35131 Padova Italy Istituto Nazionale di Fisica Nucleare Sezione di Pisa I-56127 Pisa Italy W. W. Hansen Experimental Physics Laboratory Kavli Institute for Particle Astrophysics and Cosmology Department of Physics and SLAC National Accelerator Laboratory Stanford University Stanford California 94305 USA Istituto Nazionale di Fisica Nucleare Sezione di Torino I-10125 Torino Italy Dipartimento di Fisica Università degli Studi di Torino I-10125 Torino Italy NASA Goddard Space Flight Center Greenbelt Maryland 20771 USA Laboratoire Univers et Particules de Montpellier Université Montpellier CNRS/IN2P3 F-34095 Montpellier France Laboratoire Leprince-Ringuet École polytechnique CNRS/IN2P3 F-91128 Palaiseau France Dipartimento di Fisica “M. Merlin” dell’Università e del Politecnico di Bari I-70126 Bari Italy Istituto Nazionale di Fisica Nucleare Sezione di Bari I-70126 Bari Italy Agenzia Spaziale Italiana (ASI) Science Data Center I-00133 Roma Italy Istituto Nazionale di Fisica Nucleare Sezione di Perugia I-06123 Perugia Italy Dipartimento di Fisica Università degli Studi di Perugia I-06123 Perugia Italy College of Science George Mason University Fairfax VA 22030 resident at Naval Research Laboratory Washington District of Columbia 20375 USA RWTH Aachen University Institute for Theoretical Particle Physics and Cosmology (TTK) D-52056 Aachen Germany INAF Istituto di Radioastronomia I-40129 Bologna Italy Dipartimento di Astronomia Università di Bologna I-40127 Bologna Italy Università Telematica Pegaso Piazza Trieste e Trento 48 I-80132 Napoli Italy Università di Udine I-33100 Udine Italy Center for Particle Astrophysics Fermi National Accelerator Laboratory Batavia Illinois 60510 USA Erlangen Centre for Astroparticle Physics D-91058 Erlangen Germany Department of Physics and Department of Astronomy University of Maryland College Park Maryland 20742 USA Laboratoire de Physique et Chimie de l’Environnement et de l’Espace - Université d’Orléans / CNRS F-45071 Orléans Cedex 02 France Station de radioastronomie de Nançay Observatoire de Paris CNRS/INSU F-18330 Nançay France NASA Postdoctoral Program Fellow USA Friedrich-Alexander-Universität Erlangen-Nürnberg Schlossplatz 4 91054 Erlangen Germany Science Institute University of Iceland IS-107 Reykjavik Iceland Department of Physics Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan Dipartimento di Fisica e Astronomia “G. Galilei” Università di Padova I-35131 Padova Italy Department of Physics Faculty of Science Mahidol University Bangkok 10400 Thailand Hiroshima Astrophysical Science Center Hiroshima University Higashi-Hiroshima Hiroshima 739-8526 Japan Center for Research and Exploration in Space Science and Technology (CRESST) and NASA Goddard Space Flight Center Greenbelt Maryland 20771 USA Istituto Nazionale di Fisica Nucleare Sezione di Roma “Tor Vergata” I-00133 Roma Italy Max-Planck-Institut für Physik D-80805 München Germany Funded by contract FIRB-2012-RBFR12PM1F from the Italian Ministry of Education University and Research (MIUR) Institut für Astro- und Teilchenphysik and Institut für Theoretische Physik Leopold-Franzens-Universität Innsbruck A-6020 Innsbruck Austria NYCB Real-Time Computing Inc. Lattingtown New York 11560-1025 USA Solar-Terrestrial Environment Laboratory Nagoya University Nagoya 464-8601 Japan Max-Planck-Institut für Kernphysik D-69029 Heidelberg Germany Institute of Space Sciences (IEEC-CSIC) Campus UAB E-08193 Barcelona Spain Institució Catalana de Recerca i Estudis Avançats (ICREA) Barcelona E-08010 Spain Department of Physics and Astronomy University of Denver Denver Colorado 80208 USA Istituto Nazionale di Fisica Nucleare Sezione di Trieste and Università di Trieste I-34127 Trieste Italy Laboratory for Astroparticle Physics University of Nova Gorica Vipavska 13 SI-5000 Nova Gorica Slovenia University of Geneva Department of Nuclear and Particle Physics 24 quai Ernest-Ansermet CH-1211 Geneva 4 Switzerland 

出 版 物：《Physical Review D》 (Phy. Rev. D)

年 卷 期：2017年第95卷第8期

页      面：082007-082007页

核心收录：

基　　金：K.A. Wallenberg Foundation National Space Board U.S. Department of Energy, USDOE National Aeronautics and Space Administration, NASA Japan Society for the Promotion of Science, JSPS, (15K05098) Japan Society for the Promotion of Science, JSPS Ministry of Education, Culture, Sports, Science and Technology, Monbusho Centre National d’Etudes Spatiales, CNES Agenzia Spaziale Italiana, ASI Instituto Nazionale di Fisica Nucleare, INFN Vetenskapsrådet, VR Centre National de la Recherche Scientifique, CNRS Istituto Nazionale di Astrofisica, INAF High Energy Accelerator Research Organization, KEK Institut National de Physique Nucléaire et de Physique des Particules, IN2P3 

主　　题：Cosmic ray & astroparticle detectors Cosmic ray composition & spectra Cosmic ray sources Particle astrophysics 

摘      要：We present a measurement of the cosmic-ray electron+positron spectrum between 7 GeV and 2 TeV performed with almost seven years of data collected with the Fermi Large Area Telescope. We find that the spectrum is well fit by a broken power law with a break energy at about 50 GeV. Above 50 GeV, the spectrum is well described by a single power law with a spectral index of 3.07±0.02(stat+syst)±0.04(energy measurement). An exponential cutoff lower than 1.8 TeV is excluded at 95% CL.