Cosmic Ray Proton Background Could Explain ATIC Electron Excess
High Energy Astrophysical Phenomena
2009-05-12 v4 Astrophysics of Galaxies
Abstract
We show that the excess in the Galactic electron flux recently published by Chang, et al. (Nature, 20 Nov. 2008) can have a simple methodical origin due to a contribution from misidentified proton induced electron-like events in the ATIC detector. A subtraction of the cosmic ray proton component from the published ATIC electron flux eliminates this excess in the range of 300 to 800 GeV.
Keywords
Cite
@article{arxiv.0904.2371,
title = {Cosmic Ray Proton Background Could Explain ATIC Electron Excess},
author = {A. R. Fazely and R. M. Gunasingha and S. V. Ter-Antonyan},
journal= {arXiv preprint arXiv:0904.2371},
year = {2009}
}