Clusters of Galaxies and the Hubble Constant

Details Clusters of Galaxies and the Hubble Constant Clusters of Galaxies and the Hubble Constant

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cienc..16..323f&link_type=abstract

Ciencia, Vol. 16, p. 323. ISSN 1315-2076

Other

Cosmology, Hubble Constant, Clusters Of Galaxies, Sunyaev-Zeldovich Effect

Scientific paper

The expansion rate, at height scale, of the Universe, is given for the value of the Hubble constant (H0). Several methods have used by determinations of the Hubble constant: CMB anisotropy's, Supernovae observation and AGN at height red-shift. In this work, we used the Grainge et al (3) method by estimated of the Hubble constant thought of the Sunyaev-Zel'dovich effect and the result of the VSA interferometer (Teide Observatory) and the X-ray data by ROSAT. We obtain, h ? 0,78, in accord with other report by cluster of galaxies (Mason et al, 2001) as higher than of the standard value h =0,71 obtain by other method. We discussed the systematic fount of error and possible discrepant by assumptions of the spheroid and isothermal in cluster and the Sunyaev- Zel'dovich Kinetic effect.

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