Dark Matter decay and annihilation in the Local Universe: CLUES from Fermi

Understand

We present all-sky simulated Fermi maps of gamma-rays from dark matter decay and annihilation in the Local Universe.

• The dark matter distribution is obtained from a constrained cosmological simulation of the neighboring large-scale structure provided by the CLUES project.
• The dark matter fields of density and density squared are then taken as an input for the Fermi observation simulation tool to predict the gamma-ray photon counts that Fermi would detect in 5 years of all-sky survey for given dark matter models.
• Signal-to-noise sky maps have also been obtained by adopting the current Galactic and isotropic diffuse background models released by the Fermi collaboration.