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H. Yan, “Influence of a plasma on the observational signature of a high-spin Kerr black hole,” Phys. Rev. D 99
Original
1903
Earlier work this paper cites.
A. K. Mishra, S. Chakraborty and S. Sarkar, “Understanding photon sphere and black hole shadow in dynamically evolving spacetimes,” Phys. Rev. D 99
Original
1903
Earlier work this paper cites.
T. Igata, H. Ishihara and Y. Yasunishi, “Observability of spherical photon orbits in near-extremal Kerr black holes,” Phys. Rev. D 100
Original
1904
Earlier work this paper cites.
S. W. Wei, Y. C. Zou, Y. X. Liu and R. B. Mann, “Curvature radius and Kerr black hole shadow,” JCAP 1908
Original
1904
Earlier work this paper cites.
R. Kumar, B. P. Singh and S. G. Ghosh, “Rotating black hole shadow in asymptotically safe gravity,” arXiv:1904.07652 [gr-qc]
Original
1904
Earlier work this paper cites.
R. Shaikh, “Black hole shadow in a general rotating spacetime obtained through Newman-Janis algorithm,” Phys. Rev. D 100
Original
1904
Earlier work this paper cites.
C. Bambi, K. Freese, S. Vagnozzi and L. Visinelli, “Testing the rotational nature of the supermassive object M87* from the circularity and size of its first image,” Phys. Rev. D 100
Original
1904
Earlier work this paper cites.
D. Kapec and A. Lupsasca, “Particle motion near high-spin black holes,” Class. Quant. Grav. 37
Original
1905
Earlier work this paper cites.
R. A. Konoplya, “Shadow of a black hole surrounded by dark matter,” Phys. Lett. B 795
Original
1905
Earlier work this paper cites.
E. Contreras, J. M. Ramirez-Velasquez, Á. Rincón, G. Panotopoulos and P. Bargueño, “Black hole shadow of a rotating polytropic black hole by the Newman–Janis algorithm without complexification,” Eur. Phys. J. C 79
Original
1905
Earlier work this paper cites.
K. Jusufi, M. Jamil, P. Salucci, T. Zhu and S. Haroon, “Black Hole Surrounded by a Dark Matter Halo in the M87 Galactic Center and its Identification with Shadow Images,” Phys. Rev. D 100
Original
1905
Earlier work this paper cites.
S. Vagnozzi and L. Visinelli, “Hunting for extra dimensions in the shadow of M87*,” Phys. Rev. D 100
Original
1905
Earlier work this paper cites.
O. Y. Tsupko, Z. Fan and G. S. Bisnovatyi-Kogan, “Black hole shadow as a standard ruler in cosmology,” arXiv:1905.10509 [gr-qc]
Original
1905
Earlier work this paper cites.
K. Akiyama et al
Original
1906
Earlier work this paper cites.
K. Akiyama et al
Original
1906
Earlier work this paper cites.
K. Akiyama et al
Original
1906
Earlier work this paper cites.
K. Akiyama et al
Original
1906
Earlier work this paper cites.
K. Akiyama et al
Original
1906
Earlier work this paper cites.
K. Akiyama et al
Original
1906
Earlier work this paper cites.
T. Zhu, Q. Wu, M. Jamil and K. Jusufi, “Shadows and deflection angle of charged and slowly rotating black holes in Einstein-Æther theory,” Phys. Rev. D 100
Original
1906
Earlier work this paper cites.
A. Övgün, İ. Sakalli, J. Saavedra and C. Leiva, “Shadow cast of non-commutative black holes in Rastall gravity,” arXiv:1906.05954 [hep-th]
Original
1906
Earlier work this paper cites.
E. Contreras, Á. Rincón, G. Panotopoulos, P. Bargueño and B. Koch, “Black hole shadow of a rotating scale–dependent black hole,” arXiv:1906.06990 [gr-qc]
Original
1906
Earlier work this paper cites.
J. Z. Qi and X. Zhang, “A new cosmological probe from supermassive black hole shadows,” arXiv:1906.10825 [astro-ph.CO]
Original
1906
Earlier work this paper cites.
R. A. Konoplya and A. Zhidenko, “Analytical representation for metrics of scalarized Einstein-Maxwell black holes and their shadows,” Phys. Rev. D 100
Original
1907
Earlier work this paper cites.

Similar

R. A. Konoplya, T. Pappas and A. Zhidenko, “Einstein–scalar–Gauss–Bonnet black holes: Analytical approximation for the metric and applications to calculations of shadows,” arXiv:1907.10112 [gr-qc]
Original
1907
Cited alongside, same era.
A. Das, A. Saha and S. Gangopadhyay, “Shadow of charged black holes in Gauss-Bonnet gravity,” arXiv:1909.01988 [gr-qc]
Original
1909
Cited alongside, same era.
T. Igata, K. Nakashi and K. Ogasawara, “Observability of the innermost stable circular orbit in a near-extremal Kerr black hole,” arXiv:1910.12682 [astro-ph.HE]
Original
1910
Cited alongside, same era.
M. Guo, S. Song and H. Yan, “Observational signature of a near-extremal Kerr-Sen black hole in the heterotic string theory,” arXiv:1911.04796 [gr-qc]
Original
1911
Cited alongside, same era.

Then

Z. Chang and Q. H. Zhu, “A revisit of rotating black hole shadow with astrometric observables,” arXiv:2001.05175 [gr-qc]
Original
2001
Later among the works it cites.
S. Vagnozzi, C. Bambi and L. Visinelli, “Concerns regarding the use of black hole shadows as standard rulers,” arXiv:2001.02986 [gr-qc]
Original
2001
Later among the works it cites.
S. Akcay and R. A. Matzner, “Kerr-de Sitter Universe,” Class. Quant. Grav. 28
Original
2011
Later among the works it cites.
A. Grenzebach, V. Perlick and C. Lämmerzahl, “Photon Regions and Shadows of Kerr-Newman-NUT Black Holes with a Cosmological Constant,” Phys. Rev. D 89
Original
2014
Later among the works it cites.
A. Grenzebach, V. Perlick and C. Lämmerzahl, “Photon Regions and Shadows of Accelerated Black Holes,” Int. J. Mod. Phys. D 24

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2020

Shadow of a Spinning Black Hole in an Expanding Universe

Li, Peng-Cheng, Guo, Minyong, Chen, Bin

Understand

We study the influence of the cosmic expansion on the size of the shadow of a spinning black hole observed by a comoving observer.

We first consider that the expansion is driven by a cosmological constant only and build the connection between the Kerr-de Sitter metric and the FLRW metric.
We clarify that the notion of a comoving observer is well defined in the spacetime of a spinning black hole only in the sense of being asymptotic.
The angular size of the shadow for a comoving observer is calculated.