Probing the nature of dark matter with cosmic x rays : Constraints from "dark blobs" and grating spectra of galaxy clusters

Riemer-Sorensen, Signe, Pedersen, Kristian, Hansen, Steen H. and Dahle, Haakon (2007) Probing the nature of dark matter with cosmic x rays : Constraints from "dark blobs" and grating spectra of galaxy clusters. Physical Review D, 76 4: . doi:10.1103/PhysRevD.76.043524

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Author Riemer-Sorensen, Signe
Pedersen, Kristian
Hansen, Steen H.
Dahle, Haakon
Title Probing the nature of dark matter with cosmic x rays : Constraints from "dark blobs" and grating spectra of galaxy clusters
Journal name Physical Review D   Check publisher's open access policy
ISSN 1550-7998
0556-2821
1550-2368
Publication date 2007-08
Sub-type Article (original research)
DOI 10.1103/PhysRevD.76.043524
Open Access Status File (Publisher version)
Volume 76
Issue 4
Total pages 5
Place of publication College Park, MD, United States
Publisher American Physical Society
Language eng
Formatted abstract
Gravitational lensing observations of galaxy clusters have identified dark matter blobs with remarkably low baryonic content. We use such a blob to probe the particle nature of dark matter with x-ray observations. From these observations we improve the most conservative constraints from the Milky Way halo on a particular dark matter candidate, the sterile neutrino, by an order of magnitude. We also study high resolution x-ray grating spectra of a cluster of galaxies. Based on these conservative constraints obtained from cosmic x-ray observations alone, the low mass (ms10keV) and low mixing angle (sin2(2θ)10-6) sterile neutrino is still a viable dark matter candidate. © 2007 The American Physical Society.
Keyword Sterile Neutrinos
Luminous Clusters
Sample
Chandra
Vmsm
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Article #043524

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
ERA 2012 Admin Only
 
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