Heating the intergalactic medium by radiative decay of neutrinos
نویسنده
چکیده
Assuming that there exists a species of heavy sterile neutrinos (mν > 1 keV) and their decays can serve as a heating source of the hot gas in galaxy clusters, we study how the observational constraints on cooling flow limit the mass of these sterile neutrinos. We predict a relation among the luminosity, total mass and the redshift of a cluster, and we compare this relation with data from 12 clusters to obtain an estimate of the decay rate of the sterile neutrino. PACS Numbers: 95.35.+d, 98.62.Gq, 98.65.Gw Typeset using REVTEX 1
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تاریخ انتشار 2006