Direct X-Ray Constraints on Sterile Neutrino Warm Dark Matter

Details Direct X-Ray Constraints on Sterile Neutrino Warm Dark Matter Direct X-Ray Constraints on Sterile Neutrino Warm Dark Matter

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008mgm..conf.1000w&link_type=abstract

"THE ELEVENTH MARCEL GROSSMANN MEETING On Recent Developments in Theoretical and Experimental General Relativity, Gravitation an

Physics

Scientific paper

We use the diffuse X-ray spectrum (total minus resolved point source emission) of the Andromeda galaxy to constrain the radiative decay rate and mass, ms, of sterile neutrinos, an attractive dark matter candidate. Our findings demand ms < 3.5 keV (95% C.L.) which is a significant improvement over the previous (95% C.L.) sterile neutrino mass limits inferred from the X-ray emission of nearby clusters, ms < 8.2 keV (Virgo A) and ms < 6.3 keV (Virgo A + Coma).

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