%0 Journal Article
%T Analysis of the variability periodicities of quasar 3C345<br>类星体3C345的光变周期特性
%A Dong Fu-Tong
%A Zhang Xiong
%A <br>董富通
%A 张雄
%J 物理学报
%D 2009
%I 
%X This paper has collected all available optical B magnitudes of quasar 3C345 of more than 100 years, and acquired it's long-term light curve. We make a muti-time scale analysis to it's B band data with the wavelet analysis method, and get the wavelet transform coefficient plots to demonstrate the explosion process of the optical B band of 3C345. From the analysis, we have found that threr exist approximate periods of 450 d, 780 d, 1830 d and 3540 d. The inverse wavelet transform shows the light curve variability of 3C345 on different time scales, so we can predict it's possible explosion time is the year of 2010.
%K wavelet analysis method
%K light curve
%K muti-time scale
%K wavelet transform coefficient plot<br>小波分析方法，
%K 光变曲线，
%K 多时间尺度，
%K 小波变换系数图
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=DF1175F18DA4165725CE2DB6D2CAB0C1&yid=DE12191FBD62783C&vid=9FFCC7AF50CAEBF7&iid=708DD6B15D2464E8&sid=60FA34E9C9694B7A&eid=CD6BB6D2FB3A3ABD&journal_id=1000-3290&journal_name=物理学报&referenced_num=2&reference_num=0