Latest results on dark matter searches with H.E.S.S

Abstract

The nature of Dark Matter (DM) is one of the most debated questions of contemporary physics. Ground-based arrays of Cherenkov telescopes such as the High Energy Spectroscopic System (H.E.S.S.) search for DM signatures through the detection of Very-High-Energy (VHE, $E>100$ GeV) gamma-rays. DM particles could self-annihilate in dense environments producing VHE $\gamma$-rays in the final states that could be eventually detected by H.E.S.S.. The H.E.S.S. observation strategy for DM search focuses towards the Galactic Centre (GC) region and nearby dwarf galaxy satellites of the Milky Way. The GC dataset provides the most stringent constraints on the DM annihilation cross section in the mass range 300 GeV - 70 TeV. Searches have been carried out towards classical and ultra-faint dwarf galaxies to test specific heavy DM models. The latest results towards the GC and dwarf galaxies are shown.

arXiv comment4 pages, 3 figures, conference proceeding

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• Cosmology and Astrophysics of Minimal Dark Matter
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• A high performance likelihood reconstruction of gamma-rays for Imaging Atmospheric Cherenkov Telescopes
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• Very high energy gamma rays from the composite SNR G0.9+0.1
• Spectrum and variability of the Galactic Center VHE gamma-ray source HESS J1745-290
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• MeerKAT-16 HI observation of the dIrr galaxy WLM
• Distinctive signals of frustrated dark matter
• Self-interacting Dark Matter with Scalar Dilepton Mediator
• Prospects for annihilating dark matter from M31 and M33 observations with the Cherenkov Telescope Array
• Probing the Dark Matter of Three-loop Radiative Neutrino Mass Generation Model with the Cherenkov Telescope Array
• Signatures of Dipolar Dark Matter on Indirect Detection