``Sunyaev-Zel'dovich Determined Distances to High Redshift Galaxy Clusters"

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Abstract


We present preliminary results from a maximum likelihood joint analysis of 30 GHz interferometric Sunyaev-Zel'dovich Effect (SZE) and X-ray observations for a sample of 14 high redshift (0.14 leq z leq 0.78) clusters of galaxies. From the joint SZE and X-ray analysis we determine the distances to the 14 galaxy clusters. These distances imply a Hubble parameter of 63^{+4}_{-4}^{+19}_{-19} km s^{-1} Mpc^{-1} for a Omega_M=0.3 and Omega_Lambda=0.7 cosmology, where the uncertanties are statistical followed by systematic at 68 % confidence. The implied Hubble constant is 59 ksM for an open Omega_M=0.3 universe and 56 ksM for a flat Omega_M=1 cosmology. We briefly discuss possible sources of systematic uncertainty and their controllable nature.