Gamma ray and Neutrino fluxes from a cosmological dark matter simulation

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In this paper, we estimate the gamma-ray and neutrino fluxes coming from dark matter annihilation in a Milky Way framework provided by a recent N-BODY HORIZON simulation.

• We first study the characteristics of the simulation and highlight the mass distribution within the galactic halo.
• The general dark matter density has a typical $r^{-3}$ power law for large radii, but the inner behaviour is poorly constrained below the resolution of the simulation ($\sim 200$ pc).
• We identify clumps and subclumps and analyze their distribution, as well as their internal structure.