【摘要】 收集了BL Lac天体3C 66A在γ射线波段的历史光变数据,并利用功率密度谱方法和Jurkevich方法对其光变曲线进行周期性分析,所得结果显示在3C 66A的γ射线光变曲线中存在约216.9d的光变周期,该结果能被螺旋喷流模型很好的解释.更多还原

【Abstract】 In this paper,we have collected the light curves of BL Lac Objects 3C 66 A at theγ-ray(0.1-300 GeV).Then,we have studied the period of 3C66 A by using the power spectrum estimation and the Jurkevich method.The results suggest that there is a period of P=216.9days in the light curves ofγ-ray band.The periodicity variability of 3C66 Ain theγ-ray can be best explained in terms of the helical jet model.更多还原