Journal
PHYSICAL REVIEW D
Volume 95, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.95.082007
Keywords
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Funding
- Thailand Research Fund [TRG5880173, RTA5980003]
- ICREA Funding Source: Custom
- Grants-in-Aid for Scientific Research [15K05098] Funding Source: KAKEN
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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.
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