A Measurement of H0 from the Sunyaev-Zeldovich Effect

Details A Measurement of H0 from the Sunyaev-Zeldovich Effect A Measurement of H0 from the Sunyaev-Zeldovich Effect

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apj...555l..11m&link_type=abstract

The Astrophysical Journal, Volume 555, Issue 1, pp. L11-L15.

Astronomy and Astrophysics

Astronomy

78

Cosmology: Cosmic Microwave Background, Cosmology: Observations, Cosmology: Dark Matter, Cosmology: Distance Scale, Galaxies: Clusters: Individual: Name: Abell 399, Galaxies: Clusters: Individual: Name: Abell 401, Galaxies: Clusters: Individual: Name: Abell 478, Galaxies: Clusters: Individual: Name: Abell 1651, Galaxies: Clusters: Individual: Name: Abell 2142, Galaxies: Clusters: Individual: Name: Abell 2256

Scientific paper

We present a determination of the Hubble constant, H0, from measurements of the Sunyaev-Zeldovich effect in an orientation-unbiased sample of seven z<0.1 galaxy clusters. With improved X-ray models and a more accurate 32 GHz calibration, we obtain H0=64+14-11+/-14sys km s-1 Mpc-1 for a standard cold dark matter (CDM) cosmology, or H0=66+14-11+/-15sys km s-1 Mpc-1 for a flat ΛCDM cosmology. In combination with X-ray cluster measurements and the big bang nucleosynthesis value for ΩB, we find ΩM=0.32+/-0.05.

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