Thakurta metric does not describe a cosmological black hole
arXiv:2106.06651 · doi:10.1016/j.physletb.2022.137332
Abstract
Recently, the Thakurta metric has been adopted as a model of primordial black holes. We show that the spacetime described by this metric has neither black-hole event horizon nor black-hole trapping horizon and involves the violation of all the standard energy conditions as a solution of the Einstein equation. Therefore, this metric does not describe a cosmological black hole in the early universe. It is pointed out that a contradictory claim by the other group stems from an incorrect choice of sign.
6 pages, 2 figures, discussion expanded, conclusion unchanged
References in corpus (5)
- McVittie's Legacy: Black Holes in an Expanding Universe
- Searching for a subpopulation of primordial black holes in LIGO/Virgo gravitational-wave data
- Dynamical black holes with symmetry in Einstein-Gauss-Bonnet gravity
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Cited by in corpus (6)
- Primordial Black Holes
- Criteria for energy conditions
- Black hole event horizons are cosmologically coupled
- Magnetized dynamical black holes
- Dynamical axisymmetric compact objects in General Relativity
- Cosmological Black hole Candidates: A Detailed Analysis of McVittie, Culetu, Sultana-Dyer, and Glass-Mashhoon Spacetimes