|
Blazar中央黑洞的变化特性和质量估计
樊军辉
(广州大学天体物理中心 广州 510400)
(中国科学院北京大学联合天体物理中心
北京 100871)
摘 要
|
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g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。
|
|
|
| 关键词 |
活动星系核(AGNs)：变化性 －
周期性 －
耀变体 |
| 分类号 |
P145.1 |
Variability Properties and Masses of
Central Black Hole for Blazars
Fan
Junhui
(Center for Astrophysics, Guangzhou University, Guangzhou 510400)
(The Chinese Academy of Sciences-Peking University Joint Beijing Astrophysical
Center, Beijing 100871)
Abstract
|
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 time 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. |
| |
| Key words |
Active
Galactic Nuclei (AGNs): variability － periodicity － blazar |
|
|