- Access by Xinjiang University
Light rings of stationary spacetimes
Phys. Rev. D 104, 044019 – Published 6 August, 2021
DOI: https://doi.org/10.1103/PhysRevD.104.044019
Abstract
We present a novel theorem regarding light rings in a stationary spacetime with an ergoregion. We prove that any stationary, axisymmetric, and asymptotically flat spacetime in dimensions with an ergoregion must have at least one light ring outside the ergoregion. A possible extension of the proof for asymptotically de Sitter and anti–de Sitter spherically symmetric black holes is also discussed.
Physics Subject Headings (PhySH)
Article Text
References (10)
- K. Akiyama et al. (Event Horizon Telescope Collaboration), Astrophys. J. 875, L1 (2019).
- P. V. P. Cunha and C. A. R. Herdeiro, Phys. Rev. Lett. 124, 181101 (2020).
- S. W. Wei, Phys. Rev. D 102, 064039 (2020).
- P. Cunha, V. P., E. Berti, and C. A. R. Herdeiro, Phys. Rev. Lett. 119, 251102 (2017).
- M. Guo and S. Gao, Phys. Rev. D 103, 104031 (2021).
- J. L. Friedman, Commun. Math. Phys. 63, 243 (1978).
- C. B. M. H. Chirenti and L. Rezzolla, Phys. Rev. D 78, 084011 (2008).
- V. Cardoso, L. C. B. Crispino, C. F. B. Macedo, H. Okawa, and P. Pani, Phys. Rev. D 90, 044069 (2014).
- S. W. Hawking, Commun. Math. Phys. 25, 152 (1972).
- A. K. Mishra, S. Chakraborty, and S. Sarkar, Phys. Rev. D 99, 104080 (2019).
