A Possible Periodicity in the Radio Light Curves of 3C 454.3

• 作 者: Shan-Jie Qian N. A. Kudryavtse
• 机 构: NationalAstronomicalObservatories,Max-Planck-institutftirRadioastronomie,AstronomyDepartment,Astrono
• 出 处: 中国天文和天体物理学报：英文版
• 发表日期: 2007年3期
• 关键词: 类星体 无线电发射 周期 星系 radio continuumgalaxies - Quasars individual 3C 454.3
• 基金项目: Acknowledgements S. J. Qian acknowledges the hospitality and financial support of the Max-Planck-Institut for Radioastronomie during his visit in 2006. N.A. Kudryavtseva was supported for this researc

During the period 1966.5–2006.2 the 15GHz and 8GHz light curves of 3C 454.3 (z = 0.859) show a quasi-periodicity of ～12.8 yr (～6.9 yr in the rest frame of the source) with a double-bump structure. This periodic behaviour is interpreted in terms of a rotat