Sunyaev--Zel'dovich Effect toward Distant Galaxy Clusters at 43 GHz; Observation and Data

Details Sunyaev--Zel'dovich Effect toward Distant Galaxy Clusters at 43 GHz; Observation and Data Sunyaev--Zel'dovich Effect toward Distant Galaxy Clusters at 43 GHz; Observation and Data

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004pasj...56..711t&link_type=abstract

Publications of the Astronomical Society of Japan, Vol.56, No.5, pp. 711-721

Astronomy and Astrophysics

Astronomy

2

Cosmic Background Radiation, Cosmology: Distance Scale, Cosmology: Observations, Galaxies: Clusters: Individual (Ms 0452-03, Cl 0016+16, Ms 1358+62, Ms 1008-12, A 697, A 773, A 2163, A 2218), X-Rays: Galaxies

Scientific paper

We have observed the Sunyaev-Zel'dovich (SZ) effect on eight X-ray bright galaxy clusters from z = 0.18 to 0.55 at 43GHz using a newly developed 6-beam receiver installed on the Nobeyama 45-m telescope. The SZ effects were detected for all clusters as temperature decrements of 0.5-1mK at the center. The Hubble constant is estimated to be H0 = 64 ± 17 km s-1 Mpc-1 for a flat Λ CDM cosmology, which shows good agreement with other SZ effect observations. Although most of the observed profiles should be described by the isothermal spherical β-model density distribution, the deviation from the model seems to be larger for clusters with an irregular distribution in the X-ray image than those without such an irregularity.

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