AP1 - Strange Stars |
Speaker_ |
Watson, Casey |
Co-autors |
John Beacom, Hasan Yuksel, Terry Walker |
Talk _ |
Direct X-ray Constraints on Sterile Neutrino Warm Dark Matter |
Abstract _ |
In this talk, I will discuss how we use the diffuse X-ray spectrum (total minus resolved point source emission) of the Andromeda galaxy to constrain the rate of sterile neutrino radiative decay and the sterile neutrino mass, m_s. Our findings demand that m_s < 3.5 keV (95% C.L.) which is a significant improvement over the previous (95% C.L.) limits inferred from the X-ray emission of nearby clusters, m_s < 8.2 keV (Virgo A) and m_s < 6.3 keV (Virgo A + Coma). |