Gamma Ray Signals from Dark Matter: Concepts, Status and Prospects - INSPIRE

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Gamma Ray Signals from Dark Matter: Concepts, Status and Prospects

Aug, 2012

43 pages

Published in:

Phys.Dark Univ. 1 (2012) 194-217

e-Print:

1208.5481 [hep-ph]

DOI:

10.1016/j.dark.2012.10.005

View in:

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Abstract: (arXiv)

Weakly interacting massive particles (WIMPs) remain a prime candidate for the cosmological dark matter (DM), even in the absence of current collider signals that would unambiguously point to new physics below the TeV scale. The self-annihilation of these particles in astronomical targets may leave observable imprints in cosmic rays of various kinds. In this review, we focus on gamma rays which we argue to play a pronounced role among the various possible messengers. We discuss the most promising spectral and spatial signatures to look for, give an update on the current state of gamma-ray searches for DM and an outlook concerning future prospects. We also assess in some detail the implications of a potential signal identification for particle DM models as well as for our understanding of structure formation. Special emphasis is put on the possible evidence for a 130 GeV line-like signal that was recently identified in the data of the Fermi gamma-ray space telescope.

Note:

42 pages, 6 figures, 2 tables/ updated reference list and extended discussion

gamma ray
WIMP: dark matter
dark matter: annihilation
cosmic radiation
dark matter: decay
GLAST
HESS
VERITAS
MAGIC
supersymmetry

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