Search for Unknown Dark Matter Satellites of the Milky Way

Details Search for Unknown Dark Matter Satellites of the Milky Way Search for Unknown Dark Matter Satellites of the Milky Way

2011-11-14

arxiv.org/abs/1111.3358v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

4 pages, 1 figure, 2 tables, 2011 Fermi Symposium proceedings - eConf C110509, full paper submitted to ApJ

Scientific paper

We present a search for Galactic dark matter (DM) satellites using the Large Area Telescope (LAT). N-body simulations based on the Lambda-CDM model of cosmology predict a large number of as yet unobserved Galactic DM satellites. These satellites could potentially produce gamma rays through the self-annihilation of DM particles. Some DM satellites are expected to have hard gamma-ray spectra, finite angular extents, and a lack of counterparts at other wavelengths. We searched for LAT sources with these characteristics. We found no candidate DM satellites matching these criteria in one year of LAT data and interpreted this result in the context of N-body simulations.

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