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M. Bonamente (UAH), M. Joy (NASA/MSFC), S. LaRoque, J. Carlstrom (U. Chicago), E. Reese (U.C. Davis), K. Dawson (U.C. Berkeley)
We present a new determination of the cosmic distance scale at high redshift using the joint analysis of high redshift (0.14 < z <0.89) Chandra X-ray and OVRO and BIMA Sunyaev-Zel'dovich (SZ) effect data of a sample of 39 high redshift (0.14 < z <0.89) galaxy clusters. The SZ/X-ray distance determinations are completely independent of the traditional cosmic distance ladder and provide a valuable check of - and are complementary to - low-redshift determinations of the expansion rate such as the HST Key project results. We review the technique, including the inherent assumptions and possible systematics, and present the results.
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Bulletin of the American Astronomical Society, 37 #4
© 2005. The American Astronomical Soceity.