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Published 1984 | Published
Book Section - Chapter Open

Theoretical Models of Active Galactic Nuclei

Abstract

We review attempts to incorporate radio sources within the context of general models of active galactic nuclei. The behaviour of gas accreting onto a massive black hole depends upon its angular momentum and accretion rate. It is argued that radio galaxies, QSR's and QSO's (and Seyfert 1 galaxies) be associated with increasing mass accretion rates M/M. The classification of an active galaxy appears to be aspect-dependent. In particular BL Lac objects, OVV quasars and the superluminally expanding compact sources appear to be beamed towards us. We show how the choice of source model can influence the statistics of beaming.

Additional Information

© 1984 by the IAU. I thank the Director of the Institute of Astronomy, Cambridge for hospitality during the writing of this paper. I am indebted to Tony Readhead, Martin Rees, Peter Scheuer and especially Sterl Phinney for invaluable discussion. Financial support by the National Science Foundation under grant AST 82, 13001 and the Alfred P. Sloan Foundation is gratefully acknowledged.

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Created:
August 19, 2023
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January 14, 2024