类星体CGRaBSJ0132+4325的射电周期研究  

Study on the Radio Period of Quasar CGRaBS J0132+4325

作　　者：王娜 易庭丰[1] 毛慰明[1] 黄邦蓉[1] WANG Na;YI Tingfeng;MAO Weiming;HUANG Bangrong(School of Physics and Electronic Information,Yunnan Normal University,Kunming 650500,China)

机构地区：[1]云南师范大学物理与电子信息学院,云南昆明650500

出　　处：《玉溪师范学院学报》2023年第6期60-65,共6页Journal of Yuxi Normal University

基　　金：国家自然科学基金项目(项目编号:12063007,11863007).

摘　　要：基于欧文斯谷射电天文台(Owens Valley Radio Observatory,OVRO)40 m望远镜近12年的观测数据,从中收集了类星体J0132+4325在15 GHz射电波段的光变曲线数据,利用LSP和加权小波Z变换方法分析其光变准周期.结果发现,类星体CGRaBS J0132+4325存在一个约851±80天的准周期振荡.基于红噪声蒙特卡洛模拟来估算其准周期信号的置信水平,得到其置信度超过3σ(99.7%).Based on the observations from the 40 meter telescope of the Owens Valley Radio Observatory(OVRO)in the past 12 years,we collected the optical variability data of CGRaBS J0132+4325 in the 15 GHz radio band,and then analyzed its optical quasi period using LSP(Lomb-Scargle periodogram)and WWZ Weight Wavelet Z-transform)methods.It is found that there is an 851 day QPO(Quasi Periodic Oscillation)in the quasar CGRaBS J0132+4325,and the confidence coefficient of the quasi periodic signal is more than 99.7%based on the red noise simulation.

关 键 词：类星体CGRaBS J0132+4325 光变准周期 光变曲线数据 LSP方法 加权小波Z变换 

分 类 号：O4-33[理学—物理]