Time-Dependent Models for Dark Matter at the Galactic Center

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dc.creatorBertone, Gianfranco
dc.creatorMerritt, David
dc.date2005-01-25
dc.date2005-10-17
dc.date.accessioned2026-07-07T11:29:33Z
dc.date.available2026-07-07T11:29:33Z
dc.descriptionThe prospects of indirect detection of dark matter at the galactic center depend sensitively on the mass profile within the inner parsec. We calculate the distribution of dark matter on sub-parsec scales by integrating the time-dependent Fokker-Planck equation, including the effects of self-annihilations, scattering of dark matter particles by stars, and capture in the supermassive black hole. We consider a variety of initial dark matter distributions, including models with very high densities ("spikes") near the black hole, and models with "adiabatic compression" of the baryons. The annihilation signal after 10 Gyr is found to be substantially reduced from its initial value, but in dark matter models with an initial spike, order-of-magnitude enhancements can persist compared with the rate in spike-free models, with important implications for indirect dark matter searches with GLAST and Air Cherenkov Telescopes like HESS and CANGAROO.
dc.descriptionFour pages
dc.identifierhttps://arxiv.org/abs/astro-ph/0501555
dc.identifierhttp://arxiv.org/abs/astro-ph/0501555
dc.identifierPhys.Rev.D72:103502,2005
dc.identifierdoi:10.1103/PhysRevD.72.103502
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196747
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleTime-Dependent Models for Dark Matter at the Galactic Center
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