Gamma-ray and radio tests of the e+e- excess from DM annihilations
Astrophysics
2009-10-09 v3 High Energy Physics - Phenomenology
Abstract
PAMELA and ATIC recently reported an excess in e+e- cosmic rays. We show that if it is due to Dark Matter annihilations, the associated gamma-ray flux and the synchrotron emission produced by e+e- in the galactic magnetic field violate HESS and radio observations of the galactic center and HESS observations of dwarf Spheroidals, unless the DM density profile is significantly less steep than the benchmark NFW and Einasto profiles.
Keywords
Cite
@article{arxiv.0811.3744,
title = {Gamma-ray and radio tests of the e+e- excess from DM annihilations},
author = {Gianfranco Bertone and Marco Cirelli and Alessandro Strumia and Marco Taoso},
journal= {arXiv preprint arXiv:0811.3744},
year = {2009}
}
Comments
16 pages, 4 figures; v2: normalizations fixed in Table 2 and typos corrected (no changes in the analysis nor the results), some references and comments added; v3: minor additions, matches published version