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

Abdollahi S, Ackermann M, Ajello M, Atwood WB, Baldini L, Barbiellini G, Bastieri D, Bellazzini R, Bloom ED, Bonino R, Brandt TJ, Bregeon J, Bruel P, Buehler R, Cameron RA, Caputo R, Caragiulo M, Castro D, Cavazzuti E, Cecchi C, Chekhtman A, Ciprini S, Cohen-Tanugi J, Costanza F, Cuoco A, Cutini S, D'Ammando F, De Palma F, Desiante R, Digel SW, Di Lalla N, Di Mauro M, Di Venere L, Drell PS, Drlica-Wagner A, Favuzzi C, Focke WB, Funk S, Fusco P, Gargano F, Gasparrini D, Giglietto N, Giordano F, Giroletti M, Green D, Guillemot L, Guiriec S, Harding AK, Jogler T, Johannesson G, Kamae T, Kuss M, La Mura G, Latronico L, Longo F, Loparco F, Lubrano P, Maldera S, Malyshev D, Manfreda A, Mazziotta MN, Michelson PF, Mirabal N, Mitthumsiri W, Mizuno T, Moiseev AA, Monzani ME, Morselli A, Moskalenko IV, Negro M, Nuss E, Orlando E, Paneque D, Perkins JS, Pesce-Rollins M, Piron F, Pivato G, Porter TA, Principe G, Raino S, Rando R, Razzano M, Reimer A, Reimer O, Sgro C, Simone D, Siskind EJ, Spada F, Spandre G, Spinelli P, Tajima H, Thayer JB, Tibaldo L, Torres DF, Troja E, Wood M, Worley A, Zaharijas G, Zimmer S (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Physical Review D American Physical Society

Book Volume: 95

Journal Issue: 8

DOI: 10.1103/PhysRevD.95.082007

Abstract

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.

Authors with CRIS profile

Stefan Funk Lehrstuhl für Physik Tobias Jogler Lehrstuhl für Physik Dmitry Malyshev Lehrstuhl für Physik Giacomo Principe Lehrstuhl für Physik

Involved external institutions

Stanford University Politecnico di Bari National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN) University of Montpellier / Université Montpellier Deutsches Elektronen-Synchrotron DESY ASI Science Data Center (ASDC) National Aeronautics and Space Administration (NASA) George Mason University Clemson University University of California, Santa Cruz (UC Santa Cruz, UCSC) University of Pisa / Università di Pisa (UniPi) University of Geneva / Université de Genève (UNIGE) Mahidol University / มหาวิทยาลัยมหิดล Hiroshima University / 広島大学 Max-Planck-Institut für Physik (Werner-Heisenberg-Institut, MPP) / Max Planck Institute for Physics National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF) Spanish National Research Council / Consejo Superior de Investigaciones Científicas (CSIC) University of Denver University of Orléans / Université d'Orléans University of Maryland, College Park (UMD) Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics University of Padua / Universita degli Studi di Padova NYCB Real-Time Computing, Inc. University of Tokyo University of Iceland (UI) / Háskóli Íslands Fermi National Accelerator Laboratory (Fermilab) École Polytechnique - Université Paris-Saclay

How to cite

APA:

Abdollahi, S., Ackermann, M., Ajello, M., Atwood, W.B., Baldini, L., Barbiellini, G.,... Zimmer, S. (2017). Cosmic-ray electron-positron spectrum from 7 GeV to 2 TeV with the Fermi Large Area Telescope. Physical Review D, 95(8). https://doi.org/10.1103/PhysRevD.95.082007

MLA:

Abdollahi, S., et al. "Cosmic-ray electron-positron spectrum from 7 GeV to 2 TeV with the Fermi Large Area Telescope." Physical Review D 95.8 (2017).

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