Diffuse inverse Compton and synchrotron emission from dark matter annihilations in galactic satellites

2004/03/22 by Edward A. Baltz, E. A. Baltz, L. Wai +1 · 3 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.70.023512

published as Phys.Rev. D70 (2004) 023512 · 13 pages, 5 figures

arxiv created 2004/03/22 · openalex publication_date 2004/07/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Annihilating dark matter particles produce roughly as much power in electrons and positrons as in gamma ray photons. The charged particles lose essentially all of their energy to inverse Compton and synchrotron processes in the galactic environment. We discuss the diffuse signature of dark matter annihilations in satellites of the Milky Way (which may be optically dark with few or no stars), providing a tail of emission trailing the satellite in its orbit. Inverse Compton processes provide x rays and gamma rays, and synchrotron emission at radio wavelengths might be seen. We discuss the possibility of detecting these signals with current and future observations, in particular EGRET and GLAST for the gamma rays.

Citations

• Cosmic abundances of stable particles: Improved analysis
• Cosmic Antiprotons as a Probe for Supersymmetric Dark Matter?
• Neutralino relic density including coannihilations
• Review of particle properties
• Review of Particle Physics

Cited by

• Gamma-ray constraints on dark matter annihilation into charged particles
• 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