Spectral cutoffs in indirect dark matter searches

Details Spectral cutoffs in indirect dark matter searches Spectral cutoffs in indirect dark matter searches

2011-11-29

arxiv.org/abs/1111.6998v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures, 1 table; conference proceedings for TAUP 2011, Munich 5-9 Sep

Scientific paper

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.

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