Abstract
The recent analysis of MiniBooNE experiment suggests that a better fit of the data arises if there are 2 types of sterile neutrinos. If the sterile neutrinos were produced during the early epoch of the Big Bang, they would be slightly degenerate. I show that the existence of 2 types slightly degenerate sterile neutrinos can fully explain the dark matter problem, the cusp problem, the hot gas density profile in clusters and the rotation curves of galaxies.
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