Searching for dark matter in the Galactic halo with a wide field of view TeV gamma-ray observatory in the Southern Hemisphere

Viana, Aion; Schoorlemmer, Harm; Albert, Andrea; de Souza, Vitor; Harding, James Patrick; Hinton, Jim

doi:10.1088/1475-7516/2019/12/061

Title: Searching for dark matter in the Galactic halo with a wide field of view TeV gamma-ray observatory in the Southern Hemisphere

Journal Article · 19 December 2019 · Journal of Cosmology and Astroparticle Physics

DOI: https://doi.org/10.1088/1475-7516/2019/12/061 · OSTI ID:1781385

Viana, Aion ^[1]; Schoorlemmer, Harm ^[2];

^[3]; de Souza, Vitor ^[1];

^[3]; Hinton, Jim ^[2]

Universidade de São Paulo, São Carlos (Brazil)
Max Planck Inst. fuer Kernphysik, Heidelberg (Germany)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Although there is mounting evidence that dark matter (DM) exists in the Universe, its fundamental nature remains unknown. We present sensitivity estimates to detect DM particles with a future very-high-energy (gsim TeV) wide field-of-view gamma-ray observatory in the Southern Hemisphere. This observatory would search for gamma rays from the annihilation or decay of DM particles in the Galactic halo. With a wide field of view, both the Galactic Center and a large fraction of the Galactic halo will be detectable with unprecedented sensitivity to DM in the mass range of ~500 GeV to ~2 PeV . These results, combined with those from other present and future gamma-ray observatories, will likely probe the thermal relic annihilation cross section of Weakly Interacting Massive Particles for all masses from ~80 TeV down to the GeV range in most annihilation channels.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC). High Energy Physics (HEP)

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 1781385

Report Number(s):: LA-UR--21-22672

Journal Information:: Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 12 Vol. 2019; ISSN 1475-7516

Publisher:: Institute of Physics (IOP)Copyright Statement

Country of Publication:: United States

Language:: English

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