The DOI matches its Crossref record; 97 of the 97 references it cites were found in a registry or an index.
Rotating black holes in 4 D Einstein-Gauss-Bonnet gravity and its shadow
Open accessAbstract
Recently there has been a surge of interest in regularizing, a D → 4 limit of, the Einstein-Gauss-Bonnet (EGB) gravity, and the resulting regularized 4 D EGB gravity has nontrivial dynamics. The theory admits spherically symmetric black holes generalizing the Schwarzschild black holes. We consider the rotating black hole in regularized 4 D EGB gravity and discuss their horizon properties and shadow cast. The effects of the GB coupling parameter on the shape and size of shadows are investigated in the context of recent M87* observations from the EHT . Interestingly, for a given spin parameter, the apparent size of the shadow decreases and gets more distorted due to the GB coupling parameter. We find that within the finite parameter space, e.g. for a =0.1 M , α⩽ 0.00394 M 2 , and within the current observational uncertainties, the rotating black holes of the 4 D EGB gravity are consistent with the inferred features of M87* black hole shadow.
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Cites
First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
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Cited by
Black holes with scalar hair in light of the Event Horizon Telescope
Khodadi, M., Allahyari, A., Vagnozzi, S., & Mota, D. F. (2020) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2020/09/026 · Cited by 266
Metadata
- Authors
- Kumar, R., & Ghosh, S. G.
- Venue
- Journal of Cosmology and Astroparticle Physics
- Publisher
- IOP Publishing
- Published
- 2020-07-24
- Volume
- 2020
- Issue
- 07
- Pages
- 053-053
- ISSN
- 1475-7508 (ISSN-L)
- 1475-7516
- OpenAlex
- W3044521988
- Cited by
- 257
- References
- 97
- FWCI
- 17.64
- Type
- journal article
- Language
- en
- Open access
- bronze
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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