X-Ray Structure of Lensing Clusters

Details X-Ray Structure of Lensing Clusters X-Ray Structure of Lensing Clusters

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000head....5.1302h&link_type=abstract

American Astronomical Society, HEAD Meeting #5, #13.02; Bulletin of the American Astronomical Society, Vol. 32, p.1198

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Clusters of galaxies sample rare peaks in the primordial matter distribution and, because their evolution is sensitive to the underlying cosmology, accurate cluster mass measurements can place strong constraints on cosmological models. We present preliminary results from recent Chandra/ACIS imaging observations of two distant clusters, A2219 (z = 0.228) and A2104 (z = 0.155), which also show evidence for gravitational lensing. Using these data, we estimate cluster masses and provide constraints on the matter distribution in the cluster cores which may be compared with the results obtained from published observations of gravitational lensing. Support for this work was provided by NASA through Chandra Award Number GO0-1122X issued by the Chandra X-Ray Observatory Center, which is operated by SAO on behalf of NASA under contract NAS8-39073.

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