Optical Monitoring of BL Lacertae Object OJ 287: A 40 Day Period?

@article{Wu2006OpticalMO,
  title={Optical Monitoring of BL Lacertae Object OJ 287: A 40 Day Period?},
  author={Jianghua Wu and Xu Zhou and Xue-Bing Wu and Fukun Liu and B. Peng and Jun Ma and Zhen-Yu Wu and Zhao-ji Jiang and Jian-sheng Chen},
  journal={The Astronomical Journal},
  year={2006},
  volume={132},
  pages={1256-1266}
}
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 period and was in a relatively quiescent state. A possible period of 40 days was derived from its light curves in three BATC wave bands. A bluer-when-brighter chromatism was discovered, which is different from the extremely stable color during the outburst in 1994-1996. The different color behaviors imply different… 

Figures and Tables from this paper

COLOR BEHAVIOR OF BL LACERTAE OBJECT OJ 287 DURING AN OPTICAL OUTBURST
This paper studies the color behavior of the BL Lac object OJ 287 during an optical outburst. Upon revisiting the data from the OJ 94 monitoring project, and from an analysis of the data obtained
The Variability and Period Analysis for the BL Lac AO 0235+164
TLDR
AO 0235+164 is a well studied BL Lac through the whole electro-magnetic wavebands and it is found that the optical variation leads the radio variation by 23.2$\pm$12.9 days.
Short time-scale periodicity in OJ 287
We have studied short-term variations of the blazar OJ 287, suspected to host a supermassive black hole binary. In this study, we use a two-season optical R-band dataset from 2004--2006 which
Optical multi-color monitoring of OJ 287 from 2006 to 2012
We present our optical multi-color monitoring of the BL Lac object OJ 287 from January 2006 to December 2012 in the V , R and I bands. A relatively active state in OJ 287 has been found over all
The intra-day optical monitoring of BL Lacerate object 1ES 1218+304 at its highest X-ray flux level
We here report a monitor of the BL Lac object 1ES 1218+304 in both B- and R-bands by the GWAC-F60A telescope in eight nights, when it was triggered to be at its highest X-ray flux in history by the
Detection of Possible Quasi-periodic Oscillations in the Long-term Optical Light Curve of the BL Lac Object OJ 287
Detection of periodicity in the broad-band non-thermal emission of blazars has so far been proven to be elusive. However, there are a number of scenarios which could lead to quasi-periodic variations
The Optical Variability of the BL Lac AO 0235+164
In this work, we present optical R band observations of AO 0235+164 carried out during the period of November 2006 to December 2012 using the Ap6E CCD camera attached to the primary focus of the 70
SIMULTANEOUS B'V'R' MONITORING OF BL LACERTAE OBJECT S5 0716+714 AND DETECTION OF INTER-BAND TIME DELAY
We present the results of our optical monitoring of the BL Lac object S5 0716+714 over seven nights in 2006 December. The monitoring was carried out simultaneously at three optical wavelengths with a
Multiwavelength temporal and spectral variability of the blazar OJ 287 during and after the 2015 December flare: a major accretion disc contribution
We present a multi-wavelength spectral and temporal analysis of the blazar OJ 287 during its recent activity between December 2015 -- May 2016, showing strong variability in the near-infrared (NIR)
Multi-color optical variability of the TeV blazar Mrk 501 in the low-state
...
...

References

SHOWING 1-10 OF 45 REFERENCES
The timescales of the optical variability of blazars. III - OJ 287 and BL Lacertae
The BL Lacertae objects OJ 287 and BL Lac have been photometrically monitored in an effort to study the nature of optical variations which may occur on timescales ranging from years to less than a
Optical Monitoring of BL Lacertae Object S5 0716+714 with High Temporal Resolution
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 timescales. Because
Intensive monitoring of OJ 287
We present intensive optical, infrared, and radio monitoring observations of the BL Lac object OJ 287, taken between the years 1993-1998. Two large optical outbursts were detected at the predicted
Optical and radio behaviour of the BL Lacertae object 0716+714 ⋆
Eight optical and four radio observatories have been intensively monitoring the BL Lac object 0716+714 in the last years: 4854 data points have been collected in the UBVRI bands since 1994, while
The WEBT BL Lacertae Campaign 2000
We present UBVRI light curves of BL Lacertae from May 2000 to January 2001, obtained by 24 telescopes in 11 countries. More than 15 000 observations were performed in that period, which was the
The long-term optical behavior of Mkn 421
All data available in B band for the BL Lac object Mkn 421 from 22 publications are used to construct a historical light curve, dating back to 1900. It is found that the light curve is very
Optical and radio variability of the BL Lacertae object AO 0235+16: A possible 5-6 year periodicity
The BL Lacertae object AO 0235+16 is well known for its extreme optical and radio variability. New optical and radio data have been collected in the last four years by a wide international
Radio monitoring of OJ 287 and binary black hole models for periodic outbursts
The BL Lac-type active galaxy OJ 287 exhibits a 12 year periodicity with a double-peaked maxima in its optical flux variations. Several models sought to explain this periodicity, the first one firmly
OJ 287 - Binary pair of supermassive black holes
A historical light curve of the BL Lacertae object OJ 287 is constructed in the optical V band using observations between 1890 and the present. The curve exhibits periodic outbursts at intervals of
The WEBT BL Lacertae Campaign 2001 and its extension. Optical light curves and colour analysis 1994-2002
BL Lacertae has been the target of four observing campaigns by the Whole Earth Blazar Telescope (WEBT) collaboration. In this paper we present UBVRI light curves obtained by the WEBT from 1994 to
...
...