Innermost Stable Circular Orbit of a Spinning Particle in Kerr Spacetime
General Relativity and Quantum Cosmology
2009-10-30 v1
Abstract
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.
Keywords
Cite
@article{arxiv.gr-qc/9712095,
title = {Innermost Stable Circular Orbit of a Spinning Particle in Kerr Spacetime},
author = {Shingo Suzuki and Kei-ichi Maeda},
journal= {arXiv preprint arXiv:gr-qc/9712095},
year = {2009}
}
Comments
25 pages including 8 figures