Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.187..847b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 187, June 1979, p. 847-862.
Astronomy and Astrophysics
Astronomy
52
Bremsstrahlung, Galactic Clusters, Hubble Constant, X Ray Astronomy, Astronomical Maps, Background Radiation, High Temperature Gases, Microwave Emission, Red Shift
Scientific paper
On the assumption of a thermal bremsstrahlung origin for the X-radiation observed from clusters of galaxies, limits to the value of the Hubble constant may be deduced if their X-ray fluxes, microwave background decrements, redshifts, velocity dispersions, and angular extents are known. This method is applied to three clusters, Abell 576, 2218, and 2319. The solution for the Hubble constant, about 5 to 50 km/s per Mpc, is severely dependent upon the values of the velocity dispersions, and inaccuracy in this parameter limits the usefulness of the method at present. The prospects for using the method to derive an accurate value for the Hubble constant are discussed.
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