Clusters of Galaxies in X-rays: Dark Matter

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dc.creatorCastillo-Morales, Africa
dc.creatorSchindler, Sabine
dc.date2003-03-27
dc.date.accessioned2026-07-07T02:08:07Z
dc.date.available2026-07-07T02:08:07Z
dc.descriptionWe present the analysis of baryonic and non-baryonic matter distribution in a sample of ten nearby clusters ($0.03<z<0.09$) with temperatures between 4.7 and 9.4 keV. These galaxy clusters have been studied in detail using X-ray data and global physical properties have been determined. Correlations between these quantities have been analysed and compared with the results for distant clusters. We found an interesting dependence between the relative gas extent (expressed as the ratio of gas mass fractions at $r_{500}$ and $0.5\times r_{500}$) and the total cluster mass. The extent of the gas relative to the extent of the dark matter tends to be larger in less massive clusters. This dependence might give us some hints about non-gravitational processes in clusters. The new X-ray satellites Chandra and XMM yield exciting new results for galaxy cluster physics and cosmology. We show the interesting X-ray observations of two intermediate redshift clusters, RBS797 ($z=0.35$) and CL 0939+4713 ($z=0.41$) taken with Chandra and XMM respectively.
dc.description4 pages. To appear in Proceedings of the V Meeting of the Spanish Society of Astronomy (SEA). `Highlights of Spanish Astrophysics III'. Ed. J. Gallego, J. Zamorano and N. Cardiel, ASSL, Kluwer
dc.identifierhttps://arxiv.org/abs/astro-ph/0303610
dc.identifierhttp://arxiv.org/abs/astro-ph/0303610
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/5919
dc.subjectAstrophysics
dc.titleClusters of Galaxies in X-rays: Dark Matter
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