Short term optical variability in broad absorption line QSOs

Details Short term optical variability in broad absorption line QSOs Short term optical variability in broad absorption line QSOs

1997-12-22

arxiv.org/abs/astro-ph/9712294v1

Astronomy and Astrophysics

Astrophysics

12 pages Latex file uses AASTEX, 2 Postscript figures. To appear in ApJ Letters

Scientific paper

10.1086/311185

We present the first results from a pilot programme to monitor the short term optical variability in Broad Absorption Line system QSOs. Intra-night optical variations of ~5% were detected on time scales of ~ one hour in QSOs 0846+156 and 0856+172. Further, the mean magnitude level decreased in the two objects by ~0.05 and ~0.15 magnitude respectively during the period of our observations. The observed light curves are quite similar to those previously seem in the flat spectrum radio-loud sources, especially the BL Lacertae objects, and can provide important constraints for the origin of microvariability, and also a possible evolutionary link between the radio-loud and the radio-quiet QSOs.

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