On the Relevance of Sharp Gamma-Ray Features for Indirect Dark Matter Searches

Autor:	Bringmann, Torsten, Calore, Francesca, Vertongen, Gilles, Weniger, Christoph
Rok vydání:	2011
Předmět:	High Energy Physics - Phenomenology Astrophysics - High Energy Astrophysical Phenomena
Zdroj:	Phys. Rev. D 84 (2011) 103525
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.84.103525
Popis:	Gamma rays from the annihilation of dark matter particles in the Galactic halo provide a particularly promising means of indirectly detecting dark matter. Here, we demonstrate that pronounced spectral features at energies near the dark matter particles' mass, which are a generic prediction for most models, can significantly improve the sensitivity of gamma-ray telescopes to dark matter signals. We derive projected limits on such features (including the traditionally looked-for line signals) and show that they can be much more efficient in constraining the nature of dark matter than the model-independent broad spectral features expected at lower energies. Comment: 7 pages, 5 figures, 2 tables, extended version as published in PRD
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1106.1874 Zobrazit plný text záznamu View this record from Arxiv