Dark matter searches with H.E.S.S.: nearby dwarf galaxies and IMBH mini-spikes
Creators
- 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)
Description
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 σv 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.
Additional details
Identifiers
- DOI
- 10.1063/1.3076768;
Publishing Information
- Journal Title
- AIP Conference Proceedings
- Journal Volume
- 1085
- Journal Issue
- 1
- Journal Page Range
- p. 685-688
- ISSN
- 0094-243X
- CODEN
- APCPCS
Conference
- Title
- 4. international meeting on high energy gamma-ray astronomy
- Dates
- 7-11 Jul 2008
- Place
- Heidelberg (Germany)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41005767
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- 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
- Descriptors DEC
- ASTRONOMY; COSMIC RAY SOURCES; ELECTROMAGNETIC RADIATION; FIELD THEORIES; INTERACTIONS; IONIZING RADIATIONS; MATTER; PARTICLE INTERACTIONS; RADIATIONS; STARS; SYMMETRY; UNIFIED-FIELD THEORIES
Optional Information
- Notes
- (c) 2009 American Institute of Physics
- Collaborations
- H.E.S.S. Collaboration