Quasi-periodic Oscillation Analysis for the BL Lacertae Object 1823+568  

作　　者：Huai-Zhen Li Quan-Gui Gao Long-Hua Qin Ting-Feng Yi Qi-Rui Chen 

机构地区：[1]Physics Department,Yuxi Normal University,Yuxi 653100,China [2]Department of Physics,Yunnan Normal University,Kunming 650092,China

出　　处：《Research in Astronomy and Astrophysics》2022年第5期158-164,共7页天文和天体物理学研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(NSFC,Grant Nos.12063005,12063006,11863007 and 12063007);the Program for Innovative Research Team(in Science and Technology)in University of Yunnan Province(IRTSTYN);Yunnan Local Colleges Applied Basic Research Projects(2019FH001-12,2019FH001-76,202001BA070001-031)。

摘　　要：We studied the optical band periodic variability of 1823+568 using the Jurkevich method,the Lomb-Scargle periodogram and the REDFIT38 software,and found evidence of quasi-periodic oscillation.An unprecedented variability with period P=283^(+17)_(-13) days was identified by three different analysis methods.This quasi-periodic variability most likely results from nonballistic helical jet motion driven by the orbital motion in a binary black hole system.Considering the light-travel time effect,the real physical period is P_(d)=67.1 yr.Moreover,we estimated that the primary black hole mass is M■1.92×10^(9) M_(⊙)to 3.43×10^(9) M_(⊙).

关 键 词：blazars(1823+568)-relativisticjets-non-thermalsources 

分 类 号：P157.6[天文地球—天文学]