Blazar中央黑洞的变化特性和质量估计

Variability Properties and Masses of Central Black Hole for Blazars

利用ｂｌａｚａｒ的长期的光学和红外测光数据分析了其变化特性，并利用Ｊｕｒｋｅｖｉｃｈ技术和分立相关函数（ＤＣＦ）法在光学数据中寻找光变曲线中的周期性．发现了１．５至１９ｙｒ范围的周期．利用短时间尺度来估计中央黑洞的质量，发现γ射线噪ｂｌａｚａｒ的中心黑洞质量范围为（３．８～１３０） × １０７Ｍ⊙，并对结果作了讨论．

In this paper, the compiled long-term optical and infrared measurements of some blazars are used to analyze the Variation properties, and the optical data are used to search for periodicity evidence in the lightcurve by means of the Jurkevich technique and the discrete correlation function (DCF) method. The periods are found in the range of 1.5 to 19 years. The short the scales are used to estimate the central black hole masses which are found in the range of (3.8 ~ 130) × 10７M⊙ for the gamma-ray loud blazars. Some discussions are presented.