Search for photon line-like signatures from Dark Matter annihilations with H.E.S.S.
van Eldik C, Nekrassov D (2012)
Publication Status: Published
Publication Type: Conference contribution, Conference Contribution
Publication year: 2012
Book Volume: 1505
Pages Range: 474-477
Event location: Heidelberg
ISBN: 9780735411234
DOI: 10.1063/1.4772300
Abstract
Gamma-ray line signatures can be expected in the very-high-energy (E > 100GeV) domain due to annihilation or decay of Dark Matter particles in space. Such a signal would be readily distinguishable from astrophysical gamma-ray sources that in most cases produce continuous spectra which span over several orders of magnitude in energy. Using data collected by the H.E.S.S. gamma-ray instrument, upper limits on line emission and signatures produced by internal photon bremsstrahlung are obtained in the energy range between 500 GeV and 25 TeV for the central part of the Milky Way halo and for extragalactic observations, complementing recent limits obtained with the Fermi-LAT instrument at lower energies. For the process χχ → γγ, limits are derived on the velocity-averaged DM annihilation cross section < σν >, based on the Einasto parametrization of the Galactic DM halo. © 2012 American Institute of Physics.
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How to cite
APA:
van Eldik, C., & Nekrassov, D. (2012). Search for photon line-like signatures from Dark Matter annihilations with H.E.S.S. In Proceedings of the 5th International Meeting on High Energy Gamma-Ray Astronomy (pp. 474-477). Heidelberg, DE.
MLA:
van Eldik, Christopher, and Daniil Nekrassov. "Search for photon line-like signatures from Dark Matter annihilations with H.E.S.S." Proceedings of the 5th International Meeting on High Energy Gamma-Ray Astronomy, Heidelberg 2012. 474-477.
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