Dark matter gamma-ray line searches toward the Galactic Center halo with H.E.S.S. I
Rinchiuso L, Moulin E, Viana A, van Eldik C, Veh J (2017)
Publication Type: Conference contribution
Publication year: 2017
Journal
Publisher: Sissa Medialab Srl
Conference Proceedings Title: Proceedings of Science
Event location: Bexco, Busan, KOR
Abstract
The presence of dark matter is nowadays widely supported by a large body of astronomical and cosmological observations. A large amount of dark matter is expected to be present in the central region of the Milky Way. Very-high-energy (>100 GeV) γ-rays can be produced in the annihilation of dark matter particles. The H.E.S.S. array of Imaging Atmospheric Cherenkov Telescopes is a powerful tools to observe the Galactic Centre trying to detect γ-rays from dark matter annihilation. A new search for a dark matter signal has been carried out on the full H.E.S.S.-I data set of 2004-2014 observations. A 2D-binned likelihood method has been applied to exploit the spectral and spatial properties of signal and background. Updated constraints are derived on the velocity-weighted annihilation cross section for signals from prompt annihilation of dark matter particles into two photons. The larger statistics from the 10-year Galactic Center dataset of H.E.S.S.-I together with the 2D-analysis technique allows to significantly improve the previous limits.
Authors with CRIS profile
Christopher van Eldik
Professur für Experimentalphysik
Johannes Veh
Lehrstuhl für Experimentalphysik (Astroteilchenphysik)
Involved external institutions
Institute of Research into the Fundamental Laws of the Universe / Institut de recherche sur les lois fondamentales de l'univers (IRFU)
France (FR)
Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics
Germany (DE)
France (FR)
Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics
Germany (DE)
How to cite
APA:
Rinchiuso, L., Moulin, E., Viana, A., van Eldik, C., & Veh, J. (2017). Dark matter gamma-ray line searches toward the Galactic Center halo with H.E.S.S. I. In Proceedings of Science. Bexco, Busan, KOR: Sissa Medialab Srl.
MLA:
Rinchiuso, Lucia, et al. "Dark matter gamma-ray line searches toward the Galactic Center halo with H.E.S.S. I." Proceedings of the 35th International Cosmic Ray Conference, ICRC 2017, Bexco, Busan, KOR Sissa Medialab Srl, 2017.
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