Jul 12 – 23, 2021
Europe/Berlin timezone

Searching for Dark Matter with the Southern Wide-field Gamma-ray Observatory (SWGO)

Jul 21, 2021, 12:00 PM
1h 30m


Talk DM | Dark Matter Discussion


Aion Viana (IFSC-USP)


Despite 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 (≳ TeV) wide field-of-view gamma-ray observatory in the Southern Hemisphere, currently in its research and development phase under the name Southern Wide field-of-view Gamma-ray Observatory (SWGO). This observatory would search for gamma rays from the annihilation or decay of DM particles in many key targets in the Southern sky, such as the Galactic halo, several dwarf galaxies, including the promising Reticulum II, and the Large Magellanic Cloud. With a wide field of view and long exposures, such observatory will have unprecedented sensitivity to DM in the mass range of ∼100 GeV to a few PeV from observations of a large fraction of the Galactic halo around the Galactic Center, dwarf galaxies and Galactic subhalos targets. 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.


dark matter; gamma rays; indirect searches; Galactic Center; gamma-ray telescope; Southern Wide field-of-view Gamma-ray Observatory; SWGO

Subcategory Future projects
Collaboration SWGO

Primary authors

Aion Viana (IFSC-USP) Andrea Albert (Los Alamos National Lab) J. Pat Harding (Los Alamos National Laboratory) Jim Hinton (MPIK) Maria Kherlakian (DESY) Dr Harm Schoorlemmer (Max Planck Institut fur Kernphysik) Prof. Vitor de Souza (IFSC-USP) for the SWGO Collaboration

Presentation materials