A Measurement of H0 from the Sunyaev-zeldovich Effect
نویسندگان
چکیده
We present a determination of the Hubble constant, H0, from measurements of the Sunyaev-Zeldovich effect in an orientation-unbiased sample of seven galaxy clusters. With improved X-ray models and a more z ! 0.1 accurate 32 GHz calibration, we obtain km s 1 Mpc 1 for a standard cold dark matter (CDM) 14 H p 64 14 0 11 sys cosmology, or km s 1 Mpc 1 for a flat LCDM cosmology. In combination with X-ray cluster 14 H p 66 15 0 11 sys measurements and the big bang nucleosynthesis value for , we find . Q Q p 0.32 0.05 B M Subject headings: cosmic microwave background — cosmology: observations — dark matter — distance scale — galaxies: clusters: individual (Abell 399, Abell 401, Abell 478, Abell 1651, Abell 2142, Abell 2256, Coma)
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