Quasi-Simultaneous Two Band Optical Micro-Variability of Luminous Radio-Quiet QSOs

Details Quasi-Simultaneous Two Band Optical Micro-Variability of Luminous Radio-Quiet QSOs Quasi-Simultaneous Two Band Optical Micro-Variability of Luminous Radio-Quiet QSOs

2008-05-28

arxiv.org/abs/0805.4278v1

2009, New Astronomy, 14, 88-96

Astronomy and Astrophysics

Astrophysics

22 pages, 3 tables, 6 figures; Accepted for publication to New Astronomy

Scientific paper

10.1016/j.newast.2008.05.007

We report the first results of quasi-simultaneous two passband optical monitoring of six quasi-stellar objects to search for micro-variability. We carried out photometric monitoring of these sources in an alternating sequence of R and V passbands, for five radio-quiet quasi-stellar objects (RQQSOs), 0748+291, 0824+098, 0832+251, 1101+319, 1225+317 and one radio-loud quasi-stellar object (RLQSO), 1410+429. No micro-variability was detected in any of the RQQSOs, but convincing micro-variability was detected in the RLQSO on two successive nights it was observed. Using the compiled data of optical micro-variability of RQQSOs till date, we got the duty cycle for micro-variability in RQQSOs is $\sim$ 10%. The present investigation indicates that micro-variability is not a persistent property of RQQSOs but an occasional incident.

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