Long-term Periodicity Analysis of Polarization Variation for Radio Sources

摘要：

We use the database of University of Michigan Radio Astronomy Observatory (UMRAO) at three radio bands (4.8, 8 and 14.5 GHz) to analyse the long-term polarization variation in search of the possible periodicity. Using the power spectral analysis method (PSA), the Jurkevich method and the discrete correlation function (DCF) method, we find that there are 16 sources lying in periodicity. The results show the astrophysically meaningful periodicity covering 2.1 years to 16.2 years at 4.8 GHz, 2.8 years to 16.3 years at 8 GHz, and 1.8 years to 16.6 years at 14.5 GHz.

作者: Yuhai Yuan

作者单位: Center for Experiment,Guangzhou University,Guangzhou,Guangdong 510006,Peoples Republic of China

会议类型: 国际会议

会议名称: International Conference of Multiwavelength Variability of Blazars(Blazar多波段光变国际学术会议)

会议地点: 广州

会议语种:英文

页码: 43-46

在线出版日期: 2010-09-20（万方平台首次上网日期，不代表论文的发表时间）