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Title: Measurement of the Cosmic Ray e + + e - Spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope

Abstract

Designed as a high-sensitivity gamma-ray observatory, the Fermi Large Area Telescope is also an electron detector with a large acceptance exceeding 2 m2 sr at 300 GeV. Building on the gamma-ray analysis, we have developed in this paper an efficient electron detection strategy which provides sufficient background rejection for measurement of the steeply falling electron spectrum up to 1 TeV. Our high precision data show that the electron spectrum falls with energy as E-3.0 and does not exhibit prominent spectral features. Finally, interpretations in terms of a conventional diffusive model as well as a potential local extra component are briefly discussed.

Authors:
 [1]
  1. Naval Research Lab. (NRL), Washington, DC (United States); National Academy of Sciences, Washington, DC (United States); et al.
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
Fermi LAT Collaboration
OSTI Identifier:
1357449
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 102; Journal Issue: 18; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Abdo, A. A. Measurement of the Cosmic Ray e++e- Spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope. United States: N. p., 2009. Web. doi:10.1103/PhysRevLett.102.181101.
Abdo, A. A. Measurement of the Cosmic Ray e++e- Spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope. United States. doi:10.1103/PhysRevLett.102.181101.
Abdo, A. A. Mon . "Measurement of the Cosmic Ray e++e- Spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope". United States. doi:10.1103/PhysRevLett.102.181101. https://www.osti.gov/servlets/purl/1357449.
@article{osti_1357449,
title = {Measurement of the Cosmic Ray e++e- Spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope},
author = {Abdo, A. A.},
abstractNote = {Designed as a high-sensitivity gamma-ray observatory, the Fermi Large Area Telescope is also an electron detector with a large acceptance exceeding 2 m2 sr at 300 GeV. Building on the gamma-ray analysis, we have developed in this paper an efficient electron detection strategy which provides sufficient background rejection for measurement of the steeply falling electron spectrum up to 1 TeV. Our high precision data show that the electron spectrum falls with energy as E-3.0 and does not exhibit prominent spectral features. Finally, interpretations in terms of a conventional diffusive model as well as a potential local extra component are briefly discussed.},
doi = {10.1103/PhysRevLett.102.181101},
journal = {Physical Review Letters},
number = 18,
volume = 102,
place = {United States},
year = {2009},
month = {5}
}

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Works referenced in this record:

Diffuse Galactic Continuum Gamma Rays: A Model Compatible with EGRET Data and Cosmic‐Ray Measurements
journal, October 2004

  • Strong, Andrew W.; Moskalenko, Igor V.; Reimer, Olaf
  • The Astrophysical Journal, Vol. 613, Issue 2
  • DOI: 10.1086/423193

Emulsion chamber observations of primary cosmic-ray electrons in the energy range 30-1000 GeV
journal, May 1980

  • Nishimura, J.; Fujii, M.; Taira, T.
  • The Astrophysical Journal, Vol. 238
  • DOI: 10.1086/157997

Observations of high energy primary electrons and their astrophysical significance
journal, January 1997


The Most Likely Sources of High‐Energy Cosmic‐Ray Electrons in Supernova Remnants
journal, January 2004

  • Kobayashi, T.; Komori, Y.; Yoshida, K.
  • The Astrophysical Journal, Vol. 601, Issue 1
  • DOI: 10.1086/380431

Models for galactic cosmic-ray propagation
journal, January 2001


Electron Acceleration in Supernova Remnants and Diffuse Gamma Rays above 1 GeV
journal, November 1998

  • Pohl, Martin; Esposito, Joseph A.
  • The Astrophysical Journal, Vol. 507, Issue 1
  • DOI: 10.1086/306298

An anomalous positron abundance in cosmic rays with energies 1.5–100 GeV
journal, April 2009

  • Adriani, O.; Barbarino, G. C.; Bazilevskaya, G. A.
  • Nature, Vol. 458, Issue 7238
  • DOI: 10.1038/nature07942

An excess of cosmic ray electrons at energies of 300–800 GeV
journal, November 2008


Energy Spectrum of Cosmic-Ray Electrons at TeV Energies
journal, December 2008


The Energy Spectrum of Cosmic‐Ray Electrons from 10 to 100 GeV Observed with a Highly Granulated Imaging Calorimeter
journal, October 2001

  • Torii, S.; Tamura, T.; Tateyama, N.
  • The Astrophysical Journal, Vol. 559, Issue 2
  • DOI: 10.1086/322274

Pulsars and Very High-Energy Cosmic-Ray Electrons
journal, November 1970


EGRET Observations of the Extragalactic Gamma‐Ray Emission
journal, February 1998

  • Sreekumar, P.; Bertsch, D. L.; Dingus, B. L.
  • The Astrophysical Journal, Vol. 494, Issue 2
  • DOI: 10.1086/305222

Geant4—a simulation toolkit
journal, July 2003

  • Agostinelli, S.; Allison, J.; Amako, K.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 506, Issue 3
  • DOI: 10.1016/S0168-9002(03)01368-8

A multidimensional unfolding method based on Bayes' theorem
journal, August 1995

  • D'Agostini, G.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 362, Issue 2-3
  • DOI: 10.1016/0168-9002(95)00274-X

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    journal, December 2009

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    • Proceedings of the National Academy of Sciences, Vol. 107, Issue 2
    • DOI: 10.1073/pnas.0905846107

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    journal, June 2016


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