Evidence of Quasi-periodic Oscillation in the Optical Band of the Blazar 1ES 1959+650  

作　　者：Fu-Tong Dong Ning Gai Yanke Tang Yi-Fan Wang Ting-Feng Yi 

机构地区：[1]College of Physics and Electronic Information,Dezhou University,Dezhou 253023,China [2]Technological Vocational College of Dezhou,Dezhou 251200,China [3]Key Laboratory of Colleges and Universities in Yunnan Province for High-energy Astrophysics,Department of Physics,Yunnan Normal University,Kunming 650500,China

出　　处：《Research in Astronomy and Astrophysics》2022年第11期14-20,共7页天文和天体物理学研究（英文版）

基　　金：supported by National Natural Science Foundation of China(Grant No.U1931106);Shandong Provincial Natural Science Foundation of China(Grant No.ZR2019YQ03);Project of Shandong Qing Chuang Science and Technology Plan(Grant No.2019KJJ006)。

摘　　要：We analyzed the optical monitoring data in the R band of Te V blazar 1ES 1959+650 from 2002 to 2018,and provided evidence of a quasi-periodic oscillation in this object.The light curve shows a stable and persistent periodicity at~540 days,detected by the Lomb–Scargle periodogram,Jurkevich and weighted wavelet z-transform techniques.The red noise power spectrum was estimated using the PSRESP method,and this period was found to be at>3σsignificance level.There are also two possible periodicities at~268 and~1100 days detected by all three methods.However,their significance levels are relatively low,and thus these two periods cannot be verified by the present data.We discuss several possible physical models that could explain the periodic variability in this object.

关 键 词：galaxies:active methods:numerical galaxies:individual(1ES 1959+650) 

分 类 号：P157.6[天文地球—天文学]