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

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

2004-03-22

arxiv.org/abs/astro-ph/0403528v1

Phys.Rev. D70 (2004) 023512

Astronomy and Astrophysics

Astrophysics

13 pages, 5 figures

Scientific paper

10.1103/PhysRevD.70.023512

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.

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