| 黑洞吸积盘内边缘半径的演化 |
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| 引用本文： | 汪定雄,杨兰田,何沙.黑洞吸积盘内边缘半径的演化[J].中国天文和天体物理学报,1995(2). |
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| 作者姓名： | 汪定雄 杨兰田 何沙 |
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| 作者单位： | 中南民族学院物理系，华中师范大学物理系 |
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| 基金项目： | 国家自然科学基金,国家攀登计划资助 |
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| 摘 要： | 本文用广义相对论讨论了黑洞吸积盘内边缘半径ｒ（ｍｓ）的演化规律。结果表明，吸积盘的中心黑洞在由Ｓｃｈｗａｒｚｓｃｈｉｌｄ型向极端Ｋｅｒｒ型演化的过程中，黑洞的角动量变化对ｒ（ｍｓ）的影响始终比黑洞的质量变化对ｒ（ｍｓ）的影响大。在此过程中ｒ（ｍｓ）始终是连续、单调减小的。本文得出ｒ（ｍｓ）对时间变化率的取值范围，并对其物理意义作了讨论。
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| 关 键 词： | 黑洞吸积盘 内边缘半径 |
The Evolution of the Inner Marginal Radius of the Black-Hole Accretion Disk |
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| WANG Ding-xiong,YANG Lan-tian,HE Sha.The Evolution of the Inner Marginal Radius of the Black-Hole Accretion Disk[J].Chinese Journal of Astronomy and Astrophysics,1995(2). |
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| Authors: | WANG Ding-xiong YANG Lan-tian HE Sha |
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| Institution: | WANG Ding-xiong;YANG Lan-tian;HE Sha(South-Central College for Nationalities)(Huazhong Normal Univertity) |
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| Abstract: | The evolution of the inner marginal radius r_(ms)of the black-hole accretion disk is investigated on the basis of general relativity. It is shown that r_(ms) is affected more strongly by the variation of black-hole angular momentum than that of blackhole mass during the whole evolution process from Schwarzschild black hole to extreme Kerr black hole. In addition,r_(ms) always decreases continuously and monotonously in this process. The range of values for the time derivative of r_(ms) is obtained and its physical meaning is discussed in this paper. |
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| Keywords: | black hole accretion disk inner marginal radius |
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