Taoso, Marco and Ando, Shin'ichiro and Bertone, Gianfranco and Profumo, Stefano (2009) Angular correlations in the cosmic gamma-ray background from dark matter annihilation around intermediate-mass black holes. Physical Review D, 79 (4). Art No. 043521. ISSN 0556-2821 http://resolver.caltech.edu/CaltechAUTHORS:20090916-095659925
- Published Version
Restricted to Repository administrators only
See Usage Policy.
Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20090916-095659925
Dark matter (DM) annihilation could in principle contribute to the diffuse cosmic gamma-ray background. While with standard assumptions for cosmological and particle physics parameters this contribution is expected to be rather small, a number of processes could boost it, including a larger-than-expected DM annihilation cross section, or the occurrence of DM substructures such as DM minispikes around intermediate-mass black holes. We show that angular correlations of the cosmic gamma-ray background provide a tool to disentangle the signal induced by DM annihilation in minispikes from a conventional astrophysical component. Treating blazars as a known background, we study the prospects for detecting DM annihilations with the Fermi Gamma-Ray Space Telescope for different choices of DM mass and annihilation channels.
|Additional Information:||©2009 The American Physical Society. Received 19 December 2008; published 25 February 2009. M. T. thanks the California Institute of Technology for hospitality and partial support during the preparation of this work. S. A. is supported by the Sherman Fairchild Foundation. S. P. is supported by the U.S. Department of Energy under Grant No. DE-FG02-04ER41268 and by the National Science Foundation. # 95.35.+d Dark matter (stellar, interstellar, galactic, and cosmological)|
|Subject Keywords:||PACS: 95.35.+d|
|Official Citation:||Angular correlations in the cosmic gamma-ray background from dark matter annihilation around intermediate-mass black holes Marco Taoso, Shin'ichiro Ando, Gianfranco Bertone, and Stefano Profumo, Phys. Rev. D 79, 043521 (2009), DOI:10.1103/PhysRevD.79.043521|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||George Porter|
|Deposited On:||22 Sep 2009 17:30|
|Last Modified:||26 Dec 2012 11:23|
Repository Staff Only: item control page