Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-18T07:39:36.033Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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

Gondhalekar, P M, O'Brien, P & Wilson, R, 1985. Mon Not R astr Soc (submitted).Google Scholar
Kwan, J & Korlik, J H, 1981. Astrophys J 250, 478.Google Scholar
Peterson, B M, Mayers, K A, Capriotti, E R, Foltz, C B, Wilkes, B & Miller, H R, 1985. Astrophys J 292, 164.CrossRefGoogle Scholar
Ulrich, M H, Boksenberg, A, Bromage, G E, Clavel, J, Elvius, A, Penston, M V, Perola, G C, Pettini, M, Snijders, M A J, Tanzi, E G & Tarenghi, M, 1984. Mon Not R astr Soc 206, 221.CrossRefGoogle Scholar