| 活动星系核中心黑洞热力学量的演化 |
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| 引用本文： | 陆由俊,周又元.活动星系核中心黑洞热力学量的演化[J].天文学报,1998,39(1):20-27. |
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| 作者姓名： | 陆由俊 周又元 |
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| 作者单位： | 中国科学技术大学天体物理中心!合肥，230026，中国科学技术大学天体物理中心!合肥，230026 |
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| 摘 要： | 本文考虑吸积和Blandford－Znajek过程的影响，活动星系核中心黑洞的无量纲化角动量最终要演化至一稳定值，也就是说中心黑洞不会演化至极端Kerr黑洞，即不会打破热力学第三定律．这一演化过程对厚、薄两种不同几何结构的盘是相似的，即从性质上说其不依赖于盘结构．无量纲化角动量最终稳定值的大小由BZ过程的强度和吸积盘的几何结构确定．
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| 关 键 词： | 黑洞 演化 吸积和BZ过程 |
THE EVOLUTION OF THERMODYNAMICAL QUANTITIES OF THE CENTRAL BLACK HOLES IN ACTIVE GALACTIC NUCLEI |
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| Lu You-jun ,Zhou You-yuan.THE EVOLUTION OF THERMODYNAMICAL QUANTITIES OF THE CENTRAL BLACK HOLES IN ACTIVE GALACTIC NUCLEI[J].Acta Astronomica Sinica,1998,39(1):20-27. |
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| Authors: | Lu You-jun Zhou You-yuan |
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| Abstract: | Due to the effects of accretion and Blandford-Znajek process, the central blackholes in active galactic nuclei evolve with bine and the dimensionless angularmomentum gets spin up to a stable value. Thus the cental hole will not become anextreme Kerr black hole, and the third law of thermodynamics will not be violated.The existence of an equilibrium state of the hole is qualitahvely independent of thegeometry of the disk. The final stable value of the dimensionless angular momentumcan be determined by the intensity of the BZ process and disk geometry. |
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| Keywords: | black hole evolution accretion and BZ process |
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