Heating of the Intergalactic Medium by the Radiative Decay of Neutrinos | Zendy

Man Ho Chan | Zendy; M. C. Chu | Zendy

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Heating of the Intergalactic Medium by the Radiative Decay of Neutrinos

Author(s) -

Man Ho Chan,

M. C. Chu

Publication year - 2007

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/511743

Subject(s) - neutrino , physics , sterile neutrino , intergalactic medium , astrophysics , redshift , luminosity , cluster (spacecraft) , radiative transfer , galaxy , particle physics , neutrino oscillation , quantum mechanics , computer science , programming language

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 galaxyclusters, we study how the observational constraints on cooling flow limit themass of these sterile neutrinos. We predict a relation among the luminosity,total mass and the redshift of a cluster, and we compare this relation withdata from 12 clusters to obtain an estimate of the decay rate of the sterileneutrino.Comment: 15 pages, 4 figure

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