Prospects for detecting supersymmetric dark matter in the Galactic halo

摘要: The nature of the 'dark matter' thought to form bulk Universe remains obscure. One suggestion is that it an elementary particle, perhaps lightest supersymmetric partner known particle species. If were true, annihilation dark matter in halo Milky Way should produce γ-rays at a level soon be detectable. Where we looking for these γ-rays? Springel et al. report numerical simulations suggest dominant and most easily detectable signal will produced by diffuse main Way. Previously was might dominated emission from small clumps near our part galaxy, but this new work suggests their contribution would small. Dark Universe, its unknown. It plausibly species1. In case, may observable2,3. Previous has argued very clumps4,5 (perhaps smaller even than Earth), which detected where they cluster together haloes dwarf satellite galaxies6. Here such small-scale structure will, fact, have negligible impact on detectability. Rather, probably Way7,8. strongly detected, then also visible, well contain no stars, thereby confirming key prediction cold model.