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dc.contributor.authorAbramowski, A.
dc.contributor.authorBüsching, I.
dc.contributor.authorDe Jager, O.C.
dc.contributor.authorVenter, C.
dc.contributor.authorVorster, M.
dc.date.accessioned2012-11-26T10:34:26Z
dc.date.available2012-11-26T10:34:26Z
dc.date.issued2011
dc.identifier.citationAbramowski, A. et al. 2011. Search for a dark matter annihilation signal from the galactic center halo with H.E.S.S. Physical review letters, 106(16):1-6. [http://prl.aps.org/]en_US
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114 (Online)
dc.identifier.urihttp://hdl.handle.net/10394/7782
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevLett.106.161301
dc.description.abstractA search for a very-high-energy (VHE; ≥100  GeV) γ-ray signal from self-annihilating particle dark matter (DM) is performed towards a region of projected distance r∼45–150  pc from the Galactic center. The background-subtracted γ-ray spectrum measured with the High Energy Stereoscopic System (H.E.S.S.) γ-ray instrument in the energy range between 300 GeV and 30 TeV shows no hint of a residual γ-ray flux. Assuming conventional Navarro-Frenk-White and Einasto density profiles, limits are derived on the velocity-weighted annihilation cross section ⟨σv⟩ as a function of the DM particle mass. These are among the best reported so far for this energy range and in particular differ only little between the chosen density profile parametrizations. In particular, for the DM particle mass of ∼1  TeV, values for ⟨σv⟩ above 3×10-25  cm3 s-1 are excluded for the Einasto density profile.en_US
dc.language.isoenen_US
dc.publisherAmerican Physical Society (APS)en_US
dc.subjectDark matteren_US
dc.subjectgamma-rayen_US
dc.titleSearch for a dark matter annihilation signal from the galactic center halo with H.E.S.S.en_US
dc.typeArticleen_US
dc.contributor.researchID12006653 - Venter, Christo


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