Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...245l...1w&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 245, Apr. 1, 1981, p. L1-L4.
Astronomy and Astrophysics
Astronomy
11
Galactic Clusters, Optical Properties, Radio Astronomy, Radio Galaxies, Red Shift, X Ray Sources, Bl Lacertae Objects, Light Emission, Quasars, Radio Spectra
Scientific paper
The X-ray, optical and radio properties of a high redshift, Bautz-Morgan type I cluster of galaxies, namely SC 2059-247, are examined. This cluster is optically dominated by a cD galaxy with a powerful flat-spectrum radio source coincident with the possibly stellar nucleus. Two possible interpretations are suggested for the apparently soft X-ray spectrum of the extremely luminous cluster. Either the intracluster gas is much cooler in high-redshift clusters because they are less relaxed, or the X-ray and radio emissions from SC 2059-247 are the result of a nonthermal QSO/BL Lac type object in the nucleus of the cD. If the latter, it would be the first time that an X-ray source similar to a quasar or BL Lac object has been discovered in a previously identified galaxy.
Jaffe Walter Joseph
Quintana Hernan
Sarazin Craig L.
White Alan R.
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