The DOI matches its Crossref record; 38 of the 38 references it cites were found in a registry or an index.
The current ability to test theories of gravity with black hole shadows
Open accessAbstract
Our Galactic Centre, Sagittarius A*, is believed to harbour a supermassive black hole, as suggested by observations tracking individual orbiting stars1,2. Upcoming submillimetre very-long baseline interferometry images of Sagittarius A* carried out by the Event Horizon Telescope collaboration (EHTC)3,4 are expected to provide critical evidence for the existence of this supermassive black hole5,6. We assess our present ability to use EHTC images to determine whether they correspond to a Kerr black hole as predicted by Einstein’s theory of general relativity or to a black hole in alternative theories of gravity. To this end, we perform general-relativistic magnetohydrodynamical simulations and use general-relativistic radiative-transfer calculations to generate synthetic shadow images of a magnetized accretion flow onto a Kerr black hole. In addition, we perform these simulations and calculations for a dilaton black hole, which we take as a representative solution of an alternative theory of gravity. Adopting the very-long baseline interferometry configuration from the 2017 EHTC campaign, we find that it could be extremely difficult to distinguish between black holes from different theories of gravity, thus highlighting that great caution is needed when interpreting black hole images as tests of general relativity. The authors predict the ability of the Event Horizon Telescope (in its 2017 campaign) to distinguish between different theories of gravity based on images of Sagittarius A*; they suggest that it will not be possible.
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Cites
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Self-citationEvent-horizon-scale structure in the supermassive black hole candidate at the Galactic Centre
Doeleman, S. S., Weintroub, J., Rogers, A. E. E., Plambeck, R., Freund, R., Tilanus, R. P. J., Friberg, P., Ziurys, L. M., Moran, J. M., Corey, B., et al. (2008) · Nature · doi:10.1038/nature07245 · Cited by 836
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Self-citationHARM: A Numerical Scheme for General Relativistic Magnetohydrodynamics
Gammie, C. F., McKinney, J. C., & Toth, G. (2003) · The Astrophysical Journal · doi:10.1086/374594 · Cited by 798
Observations of stellar proper motions near the Galactic Centre
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New method for shadow calculations: Application to parametrized axisymmetric black holes
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Cited by
First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
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/ab0ec7 · Cited by 4,205
Self-citationFirst 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
Self-citationFirst Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric
Event Horizon Telescope Collaboration, Akiyama, K., Alberdi, A., Alef, W., Algaba, J. C., Anantua, R., Asada, K., Azulay, R., Bach, U., Baczko, A.-K., et al. (2022) · The Astrophysical Journal Letters · doi:10.3847/2041-8213/ac6756 · Cited by 668
Self-citationBambi, C., & Stojkovic, D. (2021) · Universe · doi:10.3390/universe7050136 · Cited by 109
THEMIS: 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
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Metadata
- Authors
- Mizuno, Y., Younsi, Z., Fromm, C. M., Porth, O., De Laurentis, M., Olivares, H., Falcke, H., Kramer, M., & Rezzolla, L.
- Venue
- Nature Astronomy
- Published
- 2018-04-16
- Volume
- 2
- Issue
- 7
- Pages
- 585-590
- ISSN
- 2397-3366 (ISSN-L)
- OpenAlex
- W2797653139
- Cited by
- 292
- References
- 38
- FWCI
- 15.30
- Type
- journal article
- Language
- en
- Open access
- green
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