CHANDRA X-ray Observations and Sunyaev-Zeldovich Effect Measurements of Abell 1995

Details CHANDRA X-ray Observations and Sunyaev-Zeldovich Effect Measurements of Abell 1995 CHANDRA X-ray Observations and Sunyaev-Zeldovich Effect Measurements of Abell 1995

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000head....5.1303p&link_type=abstract

American Astronomical Society, HEAD Meeting #5, #13.03; Bulletin of the American Astronomical Society, Vol. 32, p.1198

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We present our analysis of the 45 ksec Chandra x-ray observation of the massive galaxy cluster Abell 1995 at z=0.32. The Chandra data were obtained with the back-illuminated ACIS-S3 detector, yielding spatially resolved x-ray spectroscopy of the intracluster medium (ICM). We model the spatial structure of the ICM with a spherical isothermal β model and report the results of a maximum-likelihood fit, and apply a Raymond-Smith thermal model to determine the plasma temperature. When combined with previous measurements of the Sunyaev-Zeldovich Effect, these x-ray observations significantly reduce the systematic uncertainties in determining the cluster gas mass, total mass, and distance.

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