The impact of subhalos on the gamma-ray signal from dark matter annihilation

Details The impact of subhalos on the gamma-ray signal from dark matter annihilation The impact of subhalos on the gamma-ray signal from dark matter annihilation

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ap%26ss.309..517b&link_type=abstract

Astrophysics and Space Science, Volume 309, Issue 1-4, pp. 517-522

Astronomy and Astrophysics

Astrophysics

Dark Matter, Neutralino, Gamma Rays, Subhalos, Enhancement

Scientific paper

Assuming the lightest neutralino in the minimal supersymmetric extension to the Standard Model (MSSM) as the main dark matter (DM) component, we estimate the cumulative enhancement of the neutralino-induced gamma-ray signal in the Galactic halo due to the presence of subhalos. A realistic semi-analytical model for the spatial mass function of subhalos is implemented, incorporating effects that may influence the distribution and the evolution of substructures, such as the mass loss due to the tidal stripping and the orbital decay due to the dynamical friction.

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