The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.
The apparent shape of a rotating charged black hole, closed photon orbits and the bifurcation set A 4
Open accessAbstract
The apparent shapes of various Kerr-Newman spacetimes are plotted. For this purpose the geometry of closed photon orbits is studied, forming a subset of the bifurcation set A 4 , well known in elementary catastrophe theory. One additional result is that the cosmic censorship hypothesis guarantees that the spacetime casts a shadow, whereas naked ring singularities enable the visibility of the `anti-world' of negative radii r through its interior. Moreover, the optical restrictions to the observability of the shadow of an astronomical black hole are inferred.
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“Models of optically thin spherical accretion fl ows around SMBHs generically predict that they will appear to distant observers as bright rings of emission surrounding a darker central ' shadow '”
From First Sagittarius A* Event Horizon Telescope Results. IV. Variability, Morphology, and Black Hole Mass (2022) · cites this paper as de Vries 2000
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Cites
Global Structure of the Kerr Family of Gravitational Fields
Carter, B. (1968) · Physical Review · doi:10.1103/physrev.174.1559 · Cited by 2,294
Image of a spherical black hole with thin accretion disk.
Luminet, J. (1979) · Cited by 331
Ultramassive (about 10 to the 11th solar mass) dark core in the luminous infrared galaxy NGC 6240?
Bland-Hawthorn, J., Wilson, A. S., & Tully, R. B. (1991) · The Astrophysical Journal · doi:10.1086/185992 · Cited by 24
Allgemeine Relativitätstheorie und relativistische Astrophysik
Straumann, N. (1981) · Lecture notes in physics · doi:10.1007/978-3-662-21573-9 · Cited by 11
The Evolution of the Weyl and Maxwell Fields in Curved Space—Times
de Vries, A. (1996) · Mathematische Nachrichten · doi:10.1002/mana.19961790103 · Cited by 8
Self-citationThe evolution of the Dirac field in curved space-times
de Vries, A. (1995) · manuscripta mathematica · doi:10.1007/bf02567820 · Cited by 6
Self-citationBounds for mass and rotation of black holes in the observable universe
de Vries, A., Böhme, R., & Schmidt‐Kaler, T. (1995) · Astrophysics and Space Science · doi:10.1007/bf00613236 · Cited by 3
Self-citation
Research works printed but not linked: 3
- Luminet J P, 1979, Astron. Astrophys., 75, 228
- Quien N, 1995, Spektrum Wiss., 5, 56
- de Vries A, 1999, Astrophys. Space Sci.
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Calculating black hole shadows: Review of analytical studies
Perlick, V., & Tsupko, O. Y. (2021) · Physics Reports · doi:10.1016/j.physrep.2021.10.004 · Cited by 782
The Supermassive Black Hole at the Galactic Center
Melia, F., & Falcke, H. D. (2001) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.39.1.309 · Cited by 502
Gravitational Lensing from a Spacetime Perspective
Perlick, V. (2004) · Living Reviews in Relativity · doi:10.12942/lrr-2004-9 · Cited by 562
Measurement of the Kerr spin parameter by observation of a compact object’s shadow
Hioki, K., & Maeda, K.-I. (2009) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.80.024042 · Cited by 445
Photon regions and shadows of Kerr-Newman-NUT black holes with a cosmological constant
Grenzebach, A., Perlick, V., & Lämmerzahl, C. (2014) · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · doi:10.1103/physrevd.89.124004 · Cited by 420
Metadata
- Authors
- Vries, A. D.
- Affiliations
- Ruhr University Bochum (DE)
- Corresponding author
- Vries, A de
- ORCID
- Vries, A de
- Venue
- Classical and Quantum Gravity
- Publisher
- IOP Publishing
- Published
- 1999-12-13
- Volume
- 17
- Issue
- 1
- Pages
- 123-144
- ISSN
- 0264-9381 (ISSN-L)
- 1361-6382
- OpenAlex
- W2164202970
- Cited by
- 240
- References
- 7
- Citations by year
- 2026: 11 · 2025: 24 · 2024: 19 · 2023: 20 · 2022: 26 · 2021: 26 · 2020: 33 · 2019: 10 · 2018: 17 · 2017: 4 · 2016: 8 · 2015: 8 · 2014: 6 · 2013: 7 · 2012: 3
- FWCI
- 0.54
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Classical and Quantum Gravity (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astrophysical Phenomena and Observations
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Black Holes and Theoretical Physics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Relativity and Gravitational Theory
- Keywords
- Kerr-Newman black hole, charged rotating black holes, catastrophe theory, cosmic censorship, black hole shadow, optical geometry
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- Vries, A. D. (2000). The apparent shape of a rotating charged black hole, closed photon orbits and the bifurcation set A 4. Classical and Quantum Gravity. https://doi.org/10.1088/0264-9381/17/1/309
