Cosmic-ray electron-positron spectrum from 7 GeV to 2 TeV with the Fermi Large Area Telescope
2017
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 lawwith a break energy at about 50 GeV. Above 50 GeV, the spectrum is well described by a single
power lawwith a
spectral indexof 3.07 ± 0.02 (stat+syst) ± 0.04 (energy measurement). An exponential cutoff lower than 1.8 TeV is excluded at 95% CL. PACS numbers: 98.70.Sa, 96.50.sb, 95.85.Ry, 95.55.Vj
Keywords:
-
Correction
-
Source
-
Cite
-
Save
2
References
149
Citations
NaN
KQI