期刊论文

中文

天文和天体物理学研究：英文版

1674-4527

1990

010

3

199-208

国家自然科学基金

本校为第一机构

本文研究了大质量黑洞吸积盘的自引力,用薄盘位形上积分的方法计算了吸积盘自引力的径向与垂向分量,着重讨论了径向自引力。主要结果为:对于大质量黑洞(M～10~8—10~(10)M_⊙)吸积盘,在(R/R_g)～10~5—10~4的距离上,径向自引力会超过中心天体引力。在这个距离上,吸积盘的动力学结构完全不同于开普勒盘。提出了径向自引力不稳定扰动作为一种能源机制。本文还得到吸积盘自引力与中心天体引力量级比较的两个判据,并由此得到大质量黑洞吸积盘外半径的近似解析估计。本文结果可用于类星体和星系核吸积盘。

This paper studies the properties of the self-gravity of accretion discs around supermas-sive black holes. On the basis of integration for the thin disc configuration, this paper has calculated the radial and vertical components of the self-gravity of accretion discs. The discussions concentrate mainly on the radial component. This paper has got two criterions for the comparison between the accretion disc self-gravity and the gravity of the central black holes, from which an analytic estimation for the outer radius of the accretion discs has been derived. The result o...