| A Periodicity Analysis of the Light Curve of 3C 454.3 |
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| 作者姓名： | Huai-Zhen Li Guang-Zhong Xie Shu-Bai Zhou Hong-Tao Liu Guang-Wei Cha Li Ma and Li-Sheng Mao National Astronomical Observatories / Yunnan Observatory Chinese Academy of Sciences Kunming Graduate School of Chinese Academy of Sciences Beijing Yunnan Astronomical Center Yunnan University Kunming Physics |
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| 作者单位： | Huai-Zhen Li，Guang-Zhong Xie，Shu-Bai Zhou，Hong-Tao Liu，Guang-Wei Cha，Li Ma and Li-Sheng Mao National Astronomical Observatories / Yunnan Observatory，Chinese Academy of Sciences，Kunming 650011; Graduate School of Chinese Academy of Sciences，Beijing 100049 Yunnan Astronomical Center，Yunnan University，Kunming 650091 Physics Department，Yunnan University，Kunming 650091 Physics Department，Yunnan Normal College，Kunming 650091 |
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| 摘 要： | We analyzed the radio light curves of 3C 454.3 at frequencies 22 and 37 GHz taken from the database of Metsahovi Radio Observatory, and found evidence of quasi-periodic activity. The light curves show great activity with very complicated non-sinusoidal variations. Two possible periods, a very weak one of 1.57±0.12 yr and a very strong one of 6.15±0.50 yr were consistently identified by two methods, the Jurkevich method and power spectrum estimation. The period of 6.15±0.50 yr is consistent with results previously reported by Ciaramella et al. and Webb et al. Applying the binary black hole model to the central structure we found black hole masses of 1.53×109M⊙and 1.86×108M⊙, and predicted that the next radio outburst is to take place in 2006 March and April.
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| 关 键 词： | 星系 数据分析 周期性 曲线 |
A Periodicity Analysis of the Light Curve of 3C 454.3 |
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| Huai-Zhen Li,Guang-Zhong Xie,Shu-Bai Zhou,Hong-Tao Liu,Guang-Wei Cha,Li Ma and Li-Sheng Mao National Astronomical Observatories / Yunnan Observatory,Chinese Academy of Sciences,Kunming , Graduate School of Chinese Academy of Sciences,Beijing Yunnan Astronomical Center,Yunnan University,Kunming Physics.A Periodicity Analysis of the Light Curve of 3C 454.3[J].Chinese Journal of Astronomy and Astrophysics,2006,6(4):421-429. |
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| Authors: | Huai-Zhen Li Guang-Zhong Xie Shu-Bai Zhou Hong-Tao Liu Guang-Wei Cha Li Ma Li-Sheng Mao |
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| Institution: | [1]National Astronomical Observatories / Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011 [2]Graduate School of Chinese Academy of Sciences, Beijing 100049 [3]Yunnan Astronomical Center, Yunnan University, Kunming 650091 [4]Physics Department, Yunnan University, Kunming 650091 [5]Physics Department, Yunnan Normal College, Kunming 650091 |
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| Abstract: | |
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| Keywords: | galaxies: individual (3C 454 3)- galaxies: fundamental parameters - methods: data analysis |
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