Heating the intergalactic medium by radiative decay of neutrinos

Details Heating the intergalactic medium by radiative decay of neutrinos Heating the intergalactic medium by radiative decay of neutrinos

2006-09-20

arxiv.org/abs/astro-ph/0609563v1

Astrophys.J.658:859-864,2007

Astronomy and Astrophysics

Astrophysics

15 pages, 4 figures

Scientific paper

10.1086/511743

Assuming that there exists a species of heavy sterile neutrinos($m_{\nu}>1$ 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.

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