Abstract.
All the data of the blazar 3C446 at 8, 4.8, 14 and 22 GHz, presented in publications from 1977 to 2006, have been compiled to generate light curves. The light curves show violent activity of 3C446. Using Period04 analysis method, we have found that there is a period of 7.2 yr, which is consistent with the results that we found using wavelet analysis method. We get the instability region as r = 123.83r g.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Breger, M., Stich, J., Garrido, R. et al. 1993, Astron. Astrophys., 271, 482.
Jurkevich, I. N. 1971, Astrophys. Space Sci., 13, 154.
Stellingwerf, R. F. 1978, Astrophys. J., 224, 953.
Wallinder, F. H., Kato, S., Abramowicz, M. A. 1992, Astron. Astrophys., 4, 79.
Xie, G. Z., Zhou, S. B., Liang, E. W. 2004, Astron. Astrophys., 127, 53.
Zhang, X., Xie, G. Z., Bai, J. M. 1998, Astron. Astrophys., 330, 469.
Zhang, X., Xie, G. Z. et al. 2000, Astrophys. Space Sci., 61, 271.
Acknowledgements
This work is supported by the National Nature Science Foundation of China (U1231202, 11063004), the innovation team of gravitation theory research in Yunnan Normal University (2011CI127), innovation team of High Energy Astrophysics Science and Technology in Yunnan Province Universities, the Science Foundation of Yunnan Province of China (2010CD016, 2012FB140).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Guo, F., Zhang, H.J. Optical Periodicity Analysis of 3C 446 using Period04. J Astrophys Astron 35, 285–287 (2014). https://doi.org/10.1007/s12036-014-9214-z
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12036-014-9214-z