Speaker
Description
If the dark matter annihilation cross section is velocity dependent, the dark matter pair-wise relative velocity distribution enters into the calculation of the annihilation signals and the so-called J-factors. Studies of velocity-dependent dark matter annihilation commonly rely on simplified analytic models for the dark matter phase space distribution, which need to be tested against cosmological simulations. I will present the dark matter density profiles and relative velocity distributions extracted from state-of-the-art hydrodynamical simulations of Milky Way-like galaxies. I will then discuss the J-factors and expected annihilation signals from the Milky Way, dark matter subhalos, and Milky Way dwarf spheroidal analogues for velocity-dependent annihilation models.
