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Variability of emission lines in quasar spectra*

Published online by Cambridge University Press:  19 July 2016

P M Gondhalekar ,
P O'Brien  and
R Wilson
P M Gondhalekar
Affiliation:
Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 OQX, United Kingdom
P O'Brien
Affiliation:
Department of Physics & Astronomy, University College London, Gower Street, London, WC1 6BT, United Kingdom
R Wilson
Affiliation:
Department of Physics & Astronomy, University College London, Gower Street, London, WC1 6BT, United Kingdom

Abstract

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Analysis of ultraviolet spectra of quasars obtained with IUE indicate that the permitted emission lines in quasar spectra are variable. The upper limit for the delay between a change in the continuum and the consequential change in the emission lines is about 9 months. This rapid response of the permitted emission lines to changes in the continuum leads to a number of problems in understanding the nature of quasars.

Type
III. Spectral Line Studies
Information
Symposium - International Astronomical Union , Volume 119: Quasars , 1986 , pp. 349 - 350
Copyright
Copyright © Reidel 1986 

References

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