publication . Preprint . 2005

A New Signature of Dark Matter Annihilations: Gamma-Rays from Intermediate-Mass Black Holes

Bertone, Gianfranco; Zentner, Andrew R.; Silk, Joseph;
Open Access English
  • Published: 19 Sep 2005
Abstract
We study the prospects for detecting gamma-rays from Dark Matter (DM) annihilations in enhancements of the DM density (mini-spikes) around intermediate-mass black holes with masses in the range $10^2 \lsim M / \msun \lsim 10^6$. Focusing on two different IMBH formation scenarios, we show that, for typical values of mass and cross section of common DM candidates, mini-spikes, produced by the adiabatic growth of DM around pregalactic IMBHs, would be bright sources of gamma-rays, which could be easily detected with large field-of-view gamma-ray experiments such as GLAST, and further studied with smaller field-of-view, larger-area experiments like Air Cherenkov Tele...
Subjects
arXiv: Astrophysics::High Energy Astrophysical Phenomena
free text keywords: Astrophysics, High Energy Physics - Phenomenology
Related Organizations
Funded by
NSF| Center for Cosmological Physics
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 0114422
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Physics
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