Galactic halo models and particle dark-matter detection

摘要: Rates for detection of weakly interacting massive-particle (WIMP) dark matter are usually carried out assuming the Milky Way halo is an isothermal sphere. However, it possible that our not precisely spherical; may have some bulk rotation; and radial profile differ from In this paper, we calculate rates in observationally consistent alternative models produce same contributions to local asymptotic rotation speeds investigate effects theoretical uncertainty WIMP spatial velocity distribution. We use self-consistent take into account various mass distributions on The density be increased up a factor 2 by flattening or (which also decrease slightly). changes distribution these only negligible rate. Reasonable rotations lead O(10%) effect event rates. show how nuclear recoil spectrum direct-detection experiment could provide information shape halo.