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X-Rays from Active Galactic Nuclei

Published online by Cambridge University Press:  30 March 2016

A.C. Fabian
A.C. Fabian*
Affiliation:
Institute of Astronomy, Madingley Road, Cambridge, CB3 OHA, U.K.

Extract

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Recent X-ray observations of active galactic nuclei and Seyfert galaxies in particular are briefly reviewed. The application of the efficiency limit to rapidly varying luminous sources such as NGC 6814 is discussed. It is argued that the variability and probable MeV spectral turnover imply that most of the electrons which radiate the observed flux are only mildly relativistic. A possible link between the steep soft X-ray spectra and featureless optical continua of BL Lac objects is considered.

Type
Joint Discussions
Information
Highlights of Astronomy , Volume 6: Highlights of Astronomy. As presented at the XVIIIth General Assembly of the IAU, 1982 , 1983 , pp. 491 - 498
Copyright
Copyright © Reidel 1983

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