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Title: Searches for cosmic-ray electron anisotropies with the Fermi Large Area Telescope

Abstract

The Large Area Telescope on board the Fermi satellite (Fermi LAT) detected more than 1.6 × 10 6 cosmic-ray electrons/positrons with energies above 60 GeV during its first year of operation. The arrival directions of these events were searched for anisotropies of angular scale extending from ~ 10 ° up to 90°, and of minimum energy extending from 60 GeV up to 480 GeV. Two independent techniques were used to search for anisotropies, both resulting in null results. Upper limits on the degree of the anisotropy were set that depended on the analyzed energy range and on the anisotropy’s angular scale. The upper limits for a dipole anisotropy ranged from ~ 0.5 % to ~ 10 % .

Authors:
 [1]
  1. SLAC National Accelerator Lab., Menlo Park, CA (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:
1357521
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 82; Journal Issue: 9; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Ackermann, M. Searches for cosmic-ray electron anisotropies with the Fermi Large Area Telescope. United States: N. p., 2010. Web. doi:10.1103/PhysRevD.82.092003.
Ackermann, M. Searches for cosmic-ray electron anisotropies with the Fermi Large Area Telescope. United States. doi:10.1103/PhysRevD.82.092003.
Ackermann, M. Mon . "Searches for cosmic-ray electron anisotropies with the Fermi Large Area Telescope". United States. doi:10.1103/PhysRevD.82.092003. https://www.osti.gov/servlets/purl/1357521.
@article{osti_1357521,
title = {Searches for cosmic-ray electron anisotropies with the Fermi Large Area Telescope},
author = {Ackermann, M.},
abstractNote = {The Large Area Telescope on board the Fermi satellite (Fermi LAT) detected more than 1.6 × 106 cosmic-ray electrons/positrons with energies above 60 GeV during its first year of operation. The arrival directions of these events were searched for anisotropies of angular scale extending from ~ 10 ° up to 90°, and of minimum energy extending from 60 GeV up to 480 GeV. Two independent techniques were used to search for anisotropies, both resulting in null results. Upper limits on the degree of the anisotropy were set that depended on the analyzed energy range and on the anisotropy’s angular scale. The upper limits for a dipole anisotropy ranged from ~ 0.5 % to ~ 10 % .},
doi = {10.1103/PhysRevD.82.092003},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 9,
volume = 82,
place = {United States},
year = {2010},
month = {11}
}

Journal Article:
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