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

Journal Article · Wed Dec 24 00:00:00 EST 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3076768· OSTI ID:21255174

Moulin, E; Vivier, M; Brun, P; Glicenstein, J -F; Peyaud, B ^[1]; Farnier, C ^[2]; Jacholkowska, A ^[3]; Masbou, J; Rosier-Lees, S ^[4]; Ripken, J ^[5]

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1. IRFU/DSM/CEA, CE Saclay, F-91191 Gif-sur-Yvette, Cedex (France)
2. Laboratoire de Physique Theorique et Astroparticules, CNRS/IN2P3, Universite Montpellier II, CC70, Place Eugene Bataillon, F-34095 Montpellier cedex 5 (France)
3. LPNHE, Universite Pierre et Marie Curie Paris 6, Universite Denis Diderot Paris 7, CNRS/IN2P3, 4 Place Jussieu, F-75252 Paris Cedex (France)
4. Laboratoire d'Annecy-le-Vieux de Physique des Particules, CNRS/IN2P3, 9 Chemin de Bellevue, BP110, F-74941 Annecy-le-Vieux Cedex (France)
5. Universitaet Hamburg, Institut fuer Experimentalphysik, Luruper Chaussee 149, D 22761 Hamburg (Germany)

WIMP pair annihilations produce high energy gamma-rays in the final state, which can be detected by Imaging Atmospheric Cherenkov Telescopes such as the H.E.S.S. array. We focus in this contribution on searches towards dwarf galaxies and mini-spikes around intermediate mass black holes (IMBHs) in the Galactic halo. H.E.S.S. observations towards the nearby dwarf galaxies Sagittarius and Canis Major are presented. Using realistic modellings for the dark matter (DM) density profiles, constraints on the velocity-weighted annihilation cross section {sigma}v of DM particles are derived in the framework of Supersymmetric and Kaluza-Klein models. A search for DM mini-spikes around IMBHs is described as well as constraints on the particle physics parameters.

• OSTI ID: 21255174
• Journal Information: AIP Conference Proceedings, Vol. 1085, Issue 1; Conference: 4. international meeting on high energy gamma-ray astronomy, Heidelberg (Germany), 7-11 Jul 2008; Other Information: DOI: 10.1063/1.3076768; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
ANNIHILATION
BLACK HOLES
COSMIC GAMMA SOURCES
COSMIC X-RAY SOURCES
CROSS SECTIONS
DWARF STARS
GALAXIES
GAMMA ASTRONOMY
GAMMA RADIATION
KALUZA-KLEIN THEORY
MASS
NONLUMINOUS MATTER
SIMULATION
SUPERSYMMETRY
TELESCOPES
X RADIATION