X-ray radiation from the annihilation of dark matter at the galactic center

2006/07/31 by Lars Bergstrom, Lars Bergström, Malcolm Fairbairn +2 · 2 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #astro-ph

paper · pdf · doi:10.1103/physrevd.74.123515

published as Phys.Rev. D74 (2006) 123515 · 7 pages 6 figures, updated to match version in print

openalex publication_date 2006/12/21 · arxiv created 2007/06/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The existing and upcoming multiwavelength data from the galactic center suggest a comparative study in order to propose or rule out possible models which would explain the observations. In this paper we consider the x-ray synchrotron and the gamma-ray emission due to Kaluza-Klein dark matter and define a set of parameters for the shape of the dark matter halo which is consistent with the observations. We show that for this class of models the existing Chandra x-ray data are more restrictive than the constraints on very high energy gamma rays coming from HESS.

Citations

• TeVγ-rays and the largest masses and annihilation cross sections of neutralino dark matter
• Neutralino annihilation intoγrays in the Milky Way and in external galaxies
• Thermal X‐Ray Iron Line Emission from the Galactic Center Black Hole Sagittarius A*
• Time-dependent models for dark matter at the galactic center

Cited by

• Fitting the gamma-ray spectrum from dark matter with DMFIT: GLAST and the galactic center region
• Extracting the gamma ray signal from dark matter annihilation in the galactic center region