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The Large-Scale Variations of Quasi-Stellar Objects

Published online by Cambridge University Press:  14 August 2015

W. H. McCrea
W. H. McCrea*
Affiliation:
University of Sussex, Falmer, Great Britain

Extract

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The proposition for consideration is:

A QSO is an approximately standard object: it has an approximately standard history consisting mainly of an increase of optical brightness to a very high peak, and a subsequent decline. I suggest that the history has a relevant duration of about 106 yr, and that the total increase of brightness is by a factor about 103, while the mean brightness is of the order of 1% of the peak brightness (so that the peak is rather sharp).

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 44: External Galaxies and Quasi-Stellar Objects , 1972 , pp. 283 - 284
Copyright
Copyright © Reidel 1972