English

Analytical time-like geodesics in modified Hayward black hole space-time

General Relativity and Quantum Cosmology 2021-04-16 v1

Abstract

The properties of modified Hayward black hole space-time can be investigated through analyzing the particle geodesics. By means of a detailed analysis of the corresponding effective potentials for a massive particle, we find all possible orbits which are allowed by the energy levels. The trajectories of orbits are plotted by solving the equation of orbital motion numerically. We conclude that whether there is an escape orbit is associated with bb (angular momentum). The properties of orbital motion are related to bb, α\alpha (α\alpha is associated with the time delay) and β\beta (β\beta is related to 1-loop quantum corrections). There are no escape orbits when bb << 4.016M4.016M, α\alpha = 0.50 and β\beta = 1.00. For fixed α\alpha = 0.50 and β\beta = 1.00, if bb << 3.493M3.493M, there only exist unstable orbits. Comparing with the regular Hayward black hole, we go for a reasonable speculation by mean of the existing calculating results that the introduction of the modified term makes the radius of the innermost circular orbit (ISCO) and the corresponding angular momentum larger.

Keywords

Cite

@article{arxiv.2104.07523,
  title  = {Analytical time-like geodesics in modified Hayward black hole space-time},
  author = {Jian-Ping Hu and Li-Li Shi and Yu Zhang and Peng-Fei Duan},
  journal= {arXiv preprint arXiv:2104.07523},
  year   = {2021}
}

Comments

13 pages, 8 figures

R2 v1 2026-06-24T01:12:18.091Z