Innermost stable circular orbits of charged spinning test particles
arXiv:1812.10115 · doi:10.1016/j.physletb.2018.12.051
Abstract
The effects of a paritcle's spin and electric charge on its angular momentum, energy and radius on the innermost stable circular orbit are investigated based on the particle's equations of motion in a background of the Kerr-Newmann spacetime. It is found that the particle's angular momentum and energy have monotonous relationships with not only its spin but also its charge; it is also discovered that the spinning particle's radius may change non-monotonously with its charge. Hence, our result remarkably indicates that particles owning identical spin but different charge may degenerate into a same last stable circular orbit.
6 pages
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- Spinning charged test particle dynamics around a Schwarzschild black hole embedded in a homogeneous magnetic field