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arXiv · 1111.6998

Spectral cutoffs in indirect dark matter searches

Christoph Weniger·Torsten Bringmann·Francesca Calore·Gilles Vertongen
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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.

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Christoph Weniger, Torsten Bringmann, Francesca Calore, Gilles Vertongen. 2011-11-29. Spectral cutoffs in indirect dark matter searches. https://doi.org/10.1088/1742-6596/375/1/012034

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