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- Title
Precession of timelike bound orbits in Kerr spacetime.
- Authors
Bambhaniya, Parth; Solanki, Divyesh N.; Dey, Dipanjan; Joshi, Ashok B.; Joshi, Pankaj S.; Patel, Vishva
- Abstract
Astrometric observations of S-stars provide a unique opportunity to probe the nature of Sagittarius-A* (Sgr-A*). In view of this, it has become important to understand the nature and behavior of timelike bound trajectories of particles around a massive central object. It is known now that whereas the Schwarzschild black hole does not allow the negative precession for the S-stars, the naked singularity spacetimes can admit the positive as well as negative precession for the bound timelike orbits. In this context, we study the perihelion precession of a test particle in the Kerr spacetime geometry. Considering some approximations, we investigate whether the timelike bound orbits of a test particle in Kerr spacetime can have negative precession. In this paper, we only consider low eccentric timelike equatorial orbits. With these considerations, we find that in Kerr spacetimes, negative precession of timelike bound orbits is not allowed.
- Subjects
SCHWARZSCHILD black holes; SPACETIME; STELLAR orbits; PARTICLE tracks (Nuclear physics); BLACK holes
- Publication
European Physical Journal C -- Particles & Fields, 2021, Vol 81, Issue 3, p1
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-021-08997-x