Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...379..466b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 379, Oct. 1, 1991, p. 466-481. Research supported by Harvard University.
Astronomy and Astrophysics
Astronomy
145
Galactic Clusters, Hubble Constant, X Ray Astronomy, Brightness Distribution, Emission Spectra, Heao 2, Intergalactic Media, X Ray Imagery
Scientific paper
A comparison of the X-ray properties and the Sunyaev-Zel'dovich (SZ) effect for a cluster of galaxies can be used to measure the distance of the cluster and hence the Hubble constant. This method was applied to the rich cluster Abell 665. The relative normalization of X-ray and SZ-effect data leads to an estimated Hubble constant of H0 = 40 + or - 9 km/s Mpc if only the random errors are included. When the possible systematic errors are added in quadrature, the range of possible values of the Hubble constants expands to (40 to 50) + or - 12 km/s Mpc.
Arnaud A. A. K.
Birkinshaw Mark
Hughes John Patrick
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