A Possible Periodicity in the Radio Light Curves of 3C 120

MAO Li-Sheng

Astronomical Research and Technology > 2007 > 4(4): 307-312.

MAO Li-Sheng. A Possible Periodicity in the Radio Light Curves of 3C 120[J]. Astronomical Research and Technology, 2007, 4(4): 307-312.

Citation:

MAO Li-Sheng. A Possible Periodicity in the Radio Light Curves of 3C 120[J]. Astronomical Research and Technology, 2007, 4(4): 307-312.

Citation:

MAO Li-Sheng. A Possible Periodicity in the Radio Light Curves of 3C 120[J]. Astronomical Research and Technology, 2007, 4(4): 307-312.

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A Possible Periodicity in the Radio Light Curves of 3C 120

MAO Li-Sheng

Physics Department, Yunnan Normal University, Kunming 650092, China

Funds: the National Natural Science Foundation of China(No.10663002);the Natural Science Foundation of Yunnan Province(No.2006A0027M).

More Information

Received Date: January 07, 2007
Revised Date: March 01, 2007
Published Date: October 14, 2007

Graphical Abstract

Abstract

Abstract

In this paper, using two methods (The Jurkevich method and the Power Spectral Analysis method), the radio variability of Seyfert galaxy 3C 120 at five radio bands (4. 8, 8, 14. 5, 22 and 37 GHz) are studied. A periodicity about 4. 20±0. 12 a(year) during post-1978 epoch was found for all the five radio bands. This periodicity probably can be explained by the double black hole model.
- galaxies active,
- galaxies individual (3C 120),
- methods data analysis

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