Dark matter searches with H.E.S.S: nearby dwarf galaxies and IMBH mini-spikes

Details Dark matter searches with H.E.S.S: nearby dwarf galaxies and IMBH mini-spikes Dark matter searches with H.E.S.S: nearby dwarf galaxies and IMBH mini-spikes

Nov 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sf2a.conf..229m&link_type=abstract

"SF2A-2008: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics Eds.: C. Charbonnel, F. Combes

Astronomy and Astrophysics

Astrophysics

Scientific paper

WIMP pair annihilations produce high energy gamma-rays, which can be detected by IACTs such as the H.E.S.S. array of Imaging Atmospheric Cherenkov telescopes.
Nearby dwarf galaxies and mini-spikes around intermediate-mass black holes (IMBHs) in the Galactic halo are possible targets for the observation of these annihilations. H.E.S.S. observations on the nearby dwarf galaxy candidate Canis Major is reported. Using a modelling of the unknown dark matter density profile, constraints on the velocity-weighted annihilation cross section of DM particles are derived in the framework of Supersymmetric (pMSSM) and Kaluza-Klein (KK) models. Next, a search for DM mini-spikes around IMBHs is described and constraints on the particle physics parameters in various scenarios are given.

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