Innermost stable circular orbit of a spinning particle in Kerr spacetime
Innermost stable circular orbit of a spinning particle in Kerr spacetime
复制标题
DOI：
10.1103/physrevd.58.023005
复制
发表时间：
1997-12
影响因子：
5
通讯作者：
Shingo Suzuki;K. Maeda
中科院分区：
文献类型：
--
作者：
Shingo Suzuki;K. Maeda
研究了Kerr时空中自旋试验粒子圆轨道的稳定性。我们发现一些圆形轨道在垂直于赤道平面的方向上变得不稳定，尽管在径向上轨道仍然是稳定的。对于大自旋情形（$S < \sim O（1）），在赤道面有效势最小值消失之前，出现了最内层稳定圆轨道（ISCO）。这改变了ISCO的半径，然后改变了最后一个圆形轨道的频率。
We study stability of a circular orbit of a spinning test particle in a Kerr spacetime. We find that some of the circular orbits become unstable in the direction perpendicular to the equatorial plane, although the orbits are still stable in the radial direction. Then for the large spin case ($S < \sim O(1)), the innermost stable circular orbit (ISCO) appears before the minimum of the effective potential in the equatorial plane disappears. This changes the radius of ISCO and then the frequency of the last circular orbit.