Where to find a dark matter sterile neutrino?
A. Boyarsky, A. Neronov, O. Ruchayskiy, M. Shaposhnikov, I. Tkachev
Abstract
We propose a strategy of how to look for dark matter (DM) particles possessing a radiative decay channel and derive constraints on their parameters from observations of X-rays from our own Galaxy and its dwarf satellites. When applied to the sterile neutrinos in keV mass range, it allows a significant improvement of restrictions to its parameters, as compared with previous works.
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