Rotating black holes in a Randall-Sundrum brane with a cosmological constant

Neves, Juliano C. S.; Molina, C.

doi:10.1103/physrevd.86.124047

Cited by 26 publications

(19 citation statements)

References 42 publications

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“…In this setup, our main goal is to obtain extensions of the usual vacuum and electrovacuum solutions of the general relativity. Our results generalize several previous works presented in the literature [4][5][6][7][8][9]14].…”

Section: Introductionsupporting

confidence: 92%

“…In fact, if γ = 0, the admissible base solution (A 0 , A 0 ) is only admissible if q = 0 in Eq. (9), that is, taking as the base solution the Schwarzschild (S), Schwarzschild-de Sitter (S-dS) or Schwarzschild-anti-de Sitter (S-AdS) metric; if the cosmological constant is null, positive or negative respectively. On the other hand, if γ = 0, the constraint parameters must satisfy the relation α − β + 2γ = 0 so that q = 0, and therefore the Reissner-Nordström (RN), Reissner-Nordström-de Sitter (RN-dS) or Reissner-Nordström-anti-de Sitter (RN-AdS) metric is included in the family of extensions constructed.…”

Section: General Characteristics Of the Deformed Solutionsmentioning

confidence: 99%

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Deformations of the vacuum solutions of general relativity subjected to linear constraints

Molina

2013

Phys. Rev. D

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The problem of deforming geometries is particularly important in the context of constructing new exact solutions of Einstein's equation. This issue often appears when extensions of the general relativity are treated, for instance in brane world scenarios. In this paper we investigate spacetimes in which the energy-momentum tensor obeys a linear constraint. Extensions of the usual vacuum and electrovacuum solutions of general relativity are derived and an exact solution is presented. The classes of geometries obtained include a wide variety of compact objects, among them black holes and wormholes. The general metric derived in this work generalizes several solutions already published in the literature. Perturbations around the exact solution are also considered.

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Section: Introductionsupporting

confidence: 92%

Section: General Characteristics Of the Deformed Solutionsmentioning

confidence: 99%

Deformations of the vacuum solutions of general relativity subjected to linear constraints

Molina

2013

Phys. Rev. D

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“…(2) appears similar to a Kerr-Newmann black hole with an event horizon and a Cauchy horizon, while the case with negative q has no analogue in general relativity and thus provides a true signature of the additional spatial dimensions [36,43,44]. Returning back to the main focus of this paper, namely black hole shadow, suppose there exist a source of electromagnetic radiation behind a black hole, from which the photons are reaching us.…”

Section: Black Hole Shadow On the Branementioning

confidence: 99%

Silhouette of M87*: A new window to peek into the world of hidden dimensions

2020

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The recent observation of the shadow of the supermassive black hole M87*, located at the centre of the M87 galaxy, by the Event Horizon Telescope collaboration has opened up a new window to probe the strong gravity regime. In this paper, we explicitly demonstrate the consequences of this observation on brane world black hole, whose characteristic feature being existence of a negative tidal charge. Our results are based on three observables associated with the shadow of M87*, namely, deviation from circularity, axis ratio and angular diameter of the shadow. These explicitly demonstrate that the existence of a negative tidal charge parameter, marking a deviation from general relativity, is more favoured.

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“…But, in the axial case, RBHs with rotation need another strategy. For example, by using the Kerr-Schild ansatz [25,26]). In this work, we shall adopt this procedure to construct solutions from the regular metric presented in [17].…”

Section: Introductionmentioning

confidence: 99%

Deforming regular black holes

Neves

2017

Int. J. Mod. Phys. A

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In this work we have deformed regular black holes which possess a general mass term described by a function which generalizes the Bardeen and Hayward mass functions. By using linear constraints in the energy-momentum tensor to generate metrics, the solutions presented in this work are either regular or singular. That is, within this approach, it is possible to generate regular or singular black holes from regular or singular black holes. Moreover, contrary to the Bardeen and Hayward regular solutions, the deformed regular black holes may violate the weak energy condition despite the presence of the spherical symmetry. Some comments on accretion of deformed black holes in cosmological scenarios are made.Comment: 9 pages, 4 figures. Version 3 matches the published version in IJMP

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Rotating black holes in a Randall-Sundrum brane with a cosmological constant

Cited by 26 publications

References 42 publications

Deformations of the vacuum solutions of general relativity subjected to linear constraints

Deformations of the vacuum solutions of general relativity subjected to linear constraints

Silhouette of M87*: A new window to peek into the world of hidden dimensions

Deforming regular black holes

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