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arXiv · 0711.3897

Optical Monitoring of 3C 390.3 from 1995 to 2004 and Possible Periodicities in the Historical Light Curve

Jun Tao·Junhui Fan·Bochen Qian·Yi Liu
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Abstract

We report V, R, and I band CCD photometry of the radio galaxy 3C 390.3 obtained with the 1.56-m telescope of the Shanghai Astronomical Observatory from March 1995 to August 2004. Combining these data with data from the literature, we have constructed a historical light curve from 1894 to 2004 and searched for periodicities using the CLEANest program. We find possible periods of 8.30+-1.17, 5.37+-0.49, 3.51+-0.21, and 2.13+-0.08 years.

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Jun Tao, Junhui Fan, Bochen Qian, Yi Liu. 2007-11-25. Optical Monitoring of 3C 390.3 from 1995 to 2004 and Possible Periodicities in the Historical Light Curve. https://doi.org/10.1088/0004-6256%2F135%2F2%2F737

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