【摘要】 收集了BL Lacs天体1823+568射电15GHz的光变曲线，并利用Lomb-Sclargle周期图方法、Jurkevich方法和DCF方法对其进行周期性分析，分析结果显示BL Lacs天体1823+568射电15GHz的光变曲线中存在P=1054.1±185.1天的光变周期，该周期可能是由喷流进动诱导的多谱勒聚束因子的周期性变化引起的．更多还原

【Abstract】 The radio light curve of BL Lacs object 1823+568 at 15GHz was collected and its periodicity was analyzed by Lomb-Scargle Periodogram, Jurkevich and DCF methods.The results indicate that there is a variation period of P = 1054.1±185.1 days, which may be caused by the periodic change in Doppler boosting factor brought about by jet precession.更多还原