X-ray survey of clusters of galaxies with the Einstein Observatory

Details X-ray survey of clusters of galaxies with the Einstein Observatory X-ray survey of clusters of galaxies with the Einstein Observatory

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...271..446a&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 271, Aug. 15, 1983, p. 446-460.

Astronomy and Astrophysics

Astrophysics

156

Galactic Clusters, Heao 2, X Ray Sources, Background Radiation, Bremsstrahlung, Interstellar Gas, Luminosity, Spiral Galaxies

Scientific paper

A sample of 74 clusters of galaxies from the Abell catalog has been observed with the Einstein Observatory. Fifty-three of the clusters were detected. X-ray luminosities and core radii have been measured, and possible correlations between these parameters and optical and radio cluster parameters have been examined. The results are consistent with a thermal bremsstrahlung model for the X-ray emission in which a significant fraction of the gas has been supplied by ram-pressure stripping. In addition, the X-ray luminosity function of clusters has been calculated, and it is shown that clusters contribute approximately 10 percent to the soft X-ray background in the 0.5-4.0 keV band.

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