Spectral cutoffs in indirect dark matter searches
Abstract
Indirect searches for dark matter annihilation or decay products in the cosmic-ray spectrum are plagued by the question of how to disentangle a dark matter signal from the omnipresent astrophysical background. One of the practically background-free smoking-gun signatures for dark matter would be the observation of a sharp cutoff or a pronounced bump in the gamma-ray energy spectrum. Such features are generically produced in many dark matter models by internal Bremsstrahlung, and they can be treated in a similar manner as the traditionally looked-for gamma-ray lines. Here, we discuss prospects for seeing such features with present and future Atmospheric Cherenkov Telescopes.
Keywords
Cite
@article{arxiv.1111.6998,
title = {Spectral cutoffs in indirect dark matter searches},
author = {Christoph Weniger and Torsten Bringmann and Francesca Calore and Gilles Vertongen},
journal= {arXiv preprint arXiv:1111.6998},
year = {2015}
}
Comments
4 pages, 2 figures, 1 table; conference proceedings for TAUP 2011, Munich 5-9 Sep