Physics
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ppel.conf..229b&link_type=abstract
PARTICLE PHYSICS ON THE EVE OF LHC. Proceedings of the Thirteenth Lomonosov Conference on Elementary Particle Physics. Held 23 -
Physics
Scientific paper
A mass function of small-scale dark matter clumps is calculated by taking into account the tidal destruction of clumps at early stages of structure formation. The surviving clumps can be disrupted further in the Galaxy by tidal interactions with stars. A corresponding annihilation of dark matter particles in clumps produces the anisotropic gamma-ray signal on the level ~ 9% with respect to the Galaxy plane. It is demonstrated that a substantial fraction of clump remnants may survive the tidal destruction during the lifetime of the Galaxy if a clump core radius is rather small. The dense part of clump core produces the dominating input into the annihilation signal from a single clump. For this reason the survived dense remnants of tidally destructed dark matter clumps may provide the major contribution to annihilation signal from the Galactic halo.
Berezinsky Veniamin
Dokuchaev Vyacheslav
Eroshenko Yu.
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