Neutrino Portal Dark Matter: From Dwarf Galaxies to IceCube

摘要: elds only through neutrino mixing. We observe that the secluded and active neutrinos recouple, leading to a large relic population. This population can prevent small-scale halos from collapsing, while at same time signicantly modifying optical depth of ultra-high-energy recently observed Icecube. nd bulk parameter space accommodating an (a)symmetric thermal has potentially observable consequences for IceCube high energy signal, with some ranges already ruled out by existing data. Future data may conrm this mechanism if either spectral absorption features or correlations nearby sources are observed.