Other
Scientific paper
Apr 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999head....4.0404p&link_type=abstract
American Astronomical Society, HEAD meeting #4, #04.04; Bulletin of the American Astronomical Society, Vol. 31, p.700
Other
Scientific paper
We report the analysis and results of our interferometric imaging of the Sunyaev Zel'dovich (SZ) effect in Abell 1995 as observed by by the Hat Creek and Owens Valley millimeter interferometers outfitted with 30GHz recievers. We also present our analysis of the 37 ksec ROSAT HRI observation of this cluster. Assuming a spherical geometry for the cluster gas we are able to combine the X-ray observation and the SZ measurement towards Abell 1995 to determine its distance, and hence an estimate of the Hubble constant. The ROSAT HRI X-ray data can be described by an isothermal beta model with beta = 0.64 and core radius = 0.53'. We will present the distance determined from the SZ and X-ray data, assess the statistical and systematic uncertainties, and discuss the the improvement expected from the upcoming 48 ksec Chandra x-ray observation of Abell 1995.
Carlstrom Johan
Grego Laura
Holder Gilbert
Hughes John Patrick
Joy Marhshall
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