Relic keV sterile neutrinos and reionization

Details Relic keV sterile neutrinos and reionization Relic keV sterile neutrinos and reionization

2005-12-31

arxiv.org/abs/astro-ph/0601004v3

Phys.Rev.Lett.96:091301,2006

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures; minor changes in the text and references; to appear in PRL

Scientific paper

10.1103/PhysRevLett.96.091301

A sterile neutrino with mass of several keV can account for cosmological dark matter, as well as explain the observed velocities of pulsars. We show that X-rays produced by the decays of these relic sterile neutrinos can boost the production of molecular hydrogen, which can speed up the cooling of gas and the early star formation, which can, in turn, lead to a reionization of the universe at a high enough redshift to be consistent with the WMAP results.

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