Photon emission near Myers-Perry black holes in the large dimension limit

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

doi:10.1103/physrevd.101.024054

Cited by 14 publications

(8 citation statements)

References 36 publications

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“…See[12] for a short but excellent review 2. See[35][36][37][38][39][40][41][42][43][44][45][46][47][48][49], and[50][51][52] for other collaborations that use large D techniques similar to the framework of EST to study interesting and diverse problems.…”

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confidence: 99%

Black rings in large D membrane paradigm at the first order

Mandlik

2021

J. High Energ. Phys.

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Black rings are the black objects found in D spacetime dimensional gravity when D ≥ 5. These have event horizon topology SD−3× S1. In this work the solutions of the large D membrane paradigm dual to stationary black rings in Einstein-Maxwell theory with or without cosmological constant are studied. It is shown that the first order membrane equations can only admit static asymptotically flat black rings, and the equilibrium angular velocity for the asymptotically AdS black rings at large D was obtained. The thermodynamic and dynamic stability of the asymptotically flat black ring solutions is studied. The apparent shortcomings of some of these results are argued to be curable within the large D membrane paradigm framework.

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confidence: 99%

Black rings in large D membrane paradigm at the first order

Mandlik

2021

J. High Energ. Phys.

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“…Inspired by the pioneer works [3,4], people have studied the observational signatures of supermassive objects on many aspects including the shadows [5][6][7][8][9][10][11][12][13][14][15][16], the images of companion stars [17][18][19][20], the photon rings [21][22][23][24][25][26][27][28] and etc. [29][30][31][32][33][34][35][36][37][38].…”

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confidence: 99%

QED Effects on Kerr Black Hole Shadows immersed in uniform magnetic fields

Zhong,

Hu,

Yan

et al. 2021

Preprint

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In this work, taking the QED effect into account, we investigate the shadows of the Kerr black holes immersed in uniform magnetic fields through the numerical backward ray-tracing method. We introduce a dimensionless parameter Λ to characterize the strength of magnetic fields and studied the influence of magnetic fields on the Kerr black hole shadows for various spins of the black holes and inclination angles of the observers. In particular, we find that the photon "hairs" appear near the left edge of the shadow in the presence of magnetic fields. The photon hairs may be served as a signature of the magnetic fields. We notice that the photon hairs become more evident when the strength of magnetic fields or the spin of the black hole becomes larger. In addition, we study the deformation of the shadows by bringing in quantitative parameters that can describe the position and shape of the shadow edge.

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“…Another analytic study on the photon emissions has been made in[27] for rotating black hole spacetimes which is based on large D expansion.…”

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Observability of Zero-angular-momentum Sources Near Kerr Black Holes

Yan,

Guo,

Chen

2021

Preprint

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We revisit monochromatic and isotropic photon emissions from the zero-angular -momentum sources (ZAMSs) near a Kerr black hole.We investigate the escape probability of the photons that can reach to infinity and study the energy shifts of these escaping photons, which could be expressed as the functions of the source radius and the black hole spin. We study the cases for generic source radius and black hole spin, but we pay special attention to the near-horizon (near-)extremal Kerr ((near-)NHEK) cases. We reproduce the relevant numerical results using a more efficient method and get new analytical results for (near-)extremal cases. The main non-trivial results are: in the NHEK region of a (near-)extremal Kerr black hole, the escape probability for a ZAMS tends to 7 24 ≈ 29.17%, independent of the NHEK radius; at the innermost of the photon shell (IPS) in the near-NHEK region, the escape probability for a ZAMS tends to * Corresponding author.

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Photon emission near Myers-Perry black holes in the large dimension limit

Cited by 14 publications

References 36 publications

Black rings in large D membrane paradigm at the first order

Black rings in large D membrane paradigm at the first order

QED Effects on Kerr Black Hole Shadows immersed in uniform magnetic fields

Observability of Zero-angular-momentum Sources Near Kerr Black Holes

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