Sterile Neutrino as Dark Matter candidate from CMB alone
Abstract
Distortions of CMB temperature and polarization maps caused by gravitational lensing, observable with high angular resolution and sensitivity, can be used to constrain the sterile neutrino mass, ms, from CMB data alone. We forecast ms>1.75 keV from Planck and ms>4.97 keV from Inflation Probe at 95% CL, by using the CMB weak lensing extraction.
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