Probing the nature of dark matter with Cosmic X-rays: Constraints from "Dark blobs" and grating spectra of galaxy clusters

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dc.creatorRiemer-Sorensen, Signe
dc.creatorPedersen, Kristian
dc.creatorHansen, Steen H.
dc.creatorDahle, Haakon
dc.date2006-10-02
dc.date.accessioned2026-07-07T11:04:14Z
dc.date.available2026-07-07T11:04:14Z
dc.descriptionGravitational lensing observations of galaxy clusters have identified dark matter ``blobs'' with remarkably low baryonic content. We use such a system to probe the particle nature of dark matter with X-ray observations. We also study high resolution X-ray grating spectra of a cluster of galaxies. From these grating spectra we improve the conservative constraints on a particular dark matter candidate, the sterile neutrino, by more than one order of magnitude. Based on these conservative constraints obtained from Cosmic X-ray observations alone, the low mass (m_s < 10keV) and low mixing angle (sin^2(2θ) 10^{-6}) sterile neutrino is still a viable dark matter candidate.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0610034
dc.identifierhttp://arxiv.org/abs/astro-ph/0610034
dc.identifierPhys.Rev.D76:043524,2007
dc.identifierdoi:10.1103/PhysRevD.76.043524
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188822
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleProbing the nature of dark matter with Cosmic X-rays: Constraints from "Dark blobs" and grating spectra of galaxy clusters
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