Searching for velocity-dependent dark matter annihilation signals from extragalactic halos
Searching for velocity-dependent dark matter annihilation signals from extragalactic halos
We consider gamma-ray signals of dark matter annihilation in extragalactic halos in the case where dark matter annihilates from a $p$-wave or $d$-wave state. In these scenarios, signals from extragalactic halos are enhanced relative to other targets, such as the Galactic Center or dwarf spheroidal galaxies, because the typical relative …