The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Apparent shape of super-spinning black holes
Open accessAbstract
We consider the possibility that astrophysical black holes (BHs) can violate the Kerr bound; i.e., they can have angular momentum greater than BH mass, $J>M$. We discuss implications on the BH apparent shape. Even if the bound is violated by a small amount, the shadow cast by the BH changes significantly (it is $\ensuremath{\sim}$ an order of magnitude smaller) from the case with $J\ensuremath{\le}M$ and can be used as a clear observational signature in the search for super-spinning BHs. We discuss briefly recent observations in the mm range of the supermassive BH at the center of the Galaxy, speculating on the possibility that it might violate the Kerr bound.
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Citations
Cites
Shapes and Positions of Black Hole Shadows in Accretion Disks and Spin Parameters of Black Holes
Takahashi, R. (2004) · The Astrophysical Journal · doi:10.1086/422403 · Cited by 305
Cited by
First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
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First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring
The Event Horizon Telescope Collaboration, Akiyama, K., Alberdi, A., Alef, W., Asada, K., Azulay, R., Baczko, A.-K., Ball, D., Baloković, M., Barrett, J., et al. (2019) · The Astrophysical Journal Letters · doi:10.3847/2041-8213/ab0f43 · Cited by 1,424
Measurement of the Kerr spin parameter by observation of a compact object’s shadow
Hioki, K., & Maeda, K.-I. (2009) · Physical Review D · doi:10.1103/physrevd.80.024042 · Cited by 444
Bambi, C., & Stojkovic, D. (2021) · Universe · doi:10.3390/universe7050136 · Cited by 109
Self-citationTHEMIS: A Parameter Estimation Framework for the Event Horizon Telescope
Broderick, A. E., Gold, R., Karami, M., Preciado-López, J. A., Tiede, P., Pu, H.-Y., Akiyama, K., Alberdi, A., Alef, W., Asada, K., et al. (2020) · The Astrophysical Journal · doi:10.3847/1538-4357/ab91a4 · Cited by 81
Metadata
- Authors
- Bambi, C., & Freese, K.
- Venue
- Physical Review D
- Publisher
- American Physical Society (APS)
- Published
- 2009-02-05
- Volume
- 79
- Issue
- 4
- ISSN
- 0556-2821 (ISSN-L)
- 1550-7998
- 1550-2368
- OpenAlex
- W2106198430
- Cited by
- 334
- References
- 1
- FWCI
- 7.03
- Type
- journal article
- Language
- en
- Open access
- green
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