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Quasar Contribution to the X-Ray Background

Published online by Cambridge University Press:  14 August 2015

Ajit Kembhavi  and
A. C. Fabian
Ajit Kembhavi
Affiliation:
Institute of Astronomy, Madingley Road, Cambridge CB3 OHA, England
A. C. Fabian
Affiliation:
Institute of Astronomy, Madingley Road, Cambridge CB3 OHA, England

Extract

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Recent observations by the Einstein Observatory have shown that a majority of known quasars are powerful X-ray emitters. The 107 objects observed as of Feb. 1980 (Zamorani et al. 1980) have X-ray, optical and radio luminosities scattered over a wide range. Until a large enough X-ray selected sample of quasars becomes available, it is necessary to study statistical correlations in the available sample, so that some insight into X-ray production may be obtained, and the contribution of quasars to the X-ray background estimated.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 94: Origin of Cosmic Rays , 1981 , pp. 273 - 274
Copyright
Copyright © Reidel 1981 

References

Braccesi, A., Zitelli, V., Bonoli, F., and Formiggini, L.: 1980, Astron. Astrophys., 85, pp 80–92.Google Scholar
Cavaliere, A., Danese, L., De Zotti, G., and Franceschini, A.: 1980, Preprint.Google Scholar
Fabian, A.C., and Rees, M.J.: 1978, MNRAS, 185, pp 109–122.Google Scholar
Smith, M.C., and Wright, A.E.: 1979, Anglo-Australian Observatory, Preprint.Google Scholar
Zamorani, G. et al.: 1980, Preprint.Google Scholar