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A&A Supplement series, Vol. 128, March I 1998, 315-324

Received May 31, 1995, accepted June 19, 1997

Variability in blazars

Jia Guibin - Cen Xuefen - Ma Huiyu - Jiancheng Wang

Send offprint request: Jia Guibin
Yunnan Observatory, Academia Sinica, P.O. Box 110, Kunming, Yunnan, PR China


The results of both BVRI CCD photometric monitoring and fast photometry for 8 blazars and variable quasars are presented. There is intraday variability for 6 blazars and very short timescales (minutes to two hours) variability for 5 objects. Implications for relativistic beaming are briefly discussed.

keywords: BL Lacertae objects -- quasars

Copyright by the European Southern Observatory (ESO)