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astro-ph2006★ 37 cited
Optical Monitoring of BL Lacertae Object OJ 287: a 40-Day Period?
Jianghua Wu, Xu Zhou, Xuebing Wu +6
We present the results of our optical monitoring of the BL Lacertae object OJ 287 during the first half of 2005. The source did not show large-amplitude variations during this peri…
astro-ph2005
Optical Monitoring of PKS 1510-089: A Binary Black Hole System?
J. Wu, X. Zhou, B. Peng +3
Three deep flux minima were observed with nearly the same time-scales and intervals for the blazar PKS 1510-089 in the past few years. A binary black hole system was proposed to be…
astro-ph2005
Optical Monitoring of BL Lac Object S5 0716+714 with High Temporal Resolution
Jianghua Wu, Bo Peng, Xu Zhou +3
Optical monitoring of S5 0716+714 was performed with a 60/90 Schmidt telescope in 2003 November and December and 2004 January for studying the variability of the object on short ti…