1 research outputs found
Exploring resonantly produced mixed sterile neutrino dark matter models
An unidentified 3.55 keV X-ray line in stacked spectra of galaxies and
clusters raises the interesting possibility that it originates from the decay
of sterile neutrino dark matter. In this work, we explore mixed sterile
neutrino dark matter models that combine cold dark matter and warmer sterile
neutrino dark matter produced through lepton number-driven active-to-sterile
neutrino transformation. We analyze the sensitivity of the sterile neutrino
spectra on active-sterile mixing and on initial neutrino lepton numbers.
Furthermore, we assess the viability of these models with estimates of the
number of subhalos formed as the host sites of satellite galaxies.Comment: 10 pages, 12 figure