活动星系核中心黑洞的质量与进动

Black Hole Mass and Precession in Active Galactic Nuclei

为了考察活动星系核中心黑洞质量对其进动的影响,本文对活动星系核中吸积盘驱使黑洞及其喷流进动的模型即盘致进动模型作了进一步研究.首先,在进动周期-绝对星等关系中代入由观测得到的黑洞质量,结果弥散度有所减小;其次,对此模型中黑洞质量与其进动锥角在演化过程中应有的关系做了理论分析并绘出理论曲线,发现它们之间是反相关的;最后,详细考察黑洞质量和进动锥角观测值的实际分布,发现理论曲线与实际数据是相吻合的.所以,盘致进动模型对黑洞进动现象的解释是比较合理的.

This article gives a further study on the disk-driven precession model that explains the jet precession in active galactic nuclei with a single black hole and its disk,focusing on the impact of black hole mass on precession. First,substituting the black hole masses obtained by the observations results in the reduction of the dispersion and the correlation of precession period and absolute magnitude. Second,the correlation between the black hole mass and precession cone semi-angle in the model was theoretically analyzed and an anti-correlation was found. Finally,the observed values of black hole masses and precession cone semi-angle were checked carefully. The result indicates that the theoretical curve is in accordance with the observed values. Therefore, the disk-driven precession model can indeed provide a plausible explanation of the black hole precession.