The energy spectrum of cosmic-ray electrons at TeV energies

Details The energy spectrum of cosmic-ray electrons at TeV energies The energy spectrum of cosmic-ray electrons at TeV energies

2008-11-24

arxiv.org/abs/0811.3894v2

Phys.Rev.Lett.101:261104,2008

Astronomy and Astrophysics

Astrophysics

5 pages, 3 figures. PPB-Bets data points included, typo removed

Scientific paper

10.1103/PhysRevLett.101.261104

The very large collection area of ground-based gamma-ray telescopes gives them a substantial advantage over balloon/satellite based instruments in the detection of very-high-energy (>600 GeV) cosmic-ray electrons. Here we present the electron spectrum derived from data taken with the H.E.S.S. system of imaging atmospheric Cherenkov telescopes. In this measurement, the first of this type, we are able to extend the measurement of the electron spectrum beyond the range accessible to direct measurements. We find evidence for a substantial steepening in the energy spectrum above 600 GeV compared to lower energies.

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