Rapid optical variability in radio-quiet QSOs

Gopal-Krishna, ; Gupta, Alok C. ; Ram Sagar, ; Wiita, Paul J. ; Chaubey, U. S. ; Stalin, C. S. (2000) Rapid optical variability in radio-quiet QSOs Monthly Notices of the Royal Astronomical Society, 314 (4). pp. 815-825. ISSN 0035-8711

Full text not available from this repository.

Official URL: http://onlinelibrary.wiley.com/doi/10.1046/j.1365-...

Related URL: http://dx.doi.org/10.1046/j.1365-8711.2000.03446.x


We report results of the observations at the Vainu Bappu Observatory and the Uttar Pradesh State Observatory of eight radio-quiet quasi-stellar objects (RQQSOs) during 1996-99. This is a part of our ongoing programme to search for intranight optical variability in RQQSOs. Additional evidence for very rapid variability in three of the five optically bright and very luminous RQQSOs we had observed earlier, 1049-006, 1444+408 and 1630+377, was found. Of the three newly observed RQQSOs, the data for 0043+039 are too noisy to allow conclusions about variability to be drawn, but 0748+294 and 0824+098 show strong hints of microvariability. We also present a summary of the results from our entire programme to date, which includes observations of 16 radio-quiet QSOs and one radio-weak QSO, and compare the general properties of rapid variability in radio-quiet versus radio-loud AGN as determined from our work and that of several other groups. Observations of this kind are likely to play a key role in understanding the relative contributions of accretion discs and relativistic plasma jets to rapid optical fluctuations of AGN.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons.
Keywords:Galaxies: Active;galaxies: Jets; Galaxies: Photometry; Quasars: General
ID Code:91807
Deposited On:24 May 2012 07:44
Last Modified:11 Jul 2012 09:50

Repository Staff Only: item control page