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.

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

BASTIERI, DENIS;LA MURA, GIOVANNI;RANDO, RICCARDO;
2017

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.
2017
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3237909
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