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We argue that cosmic censorship is violated in the collision of two black holes in high spacetime dimension D when the initial total angular momentum is sufficiently large. The two black holes merge and form an unstable bar-like horizon,…

High Energy Physics - Theory · Physics 2019-05-06 Tomas Andrade , Roberto Emparan , David Licht , Raimon Luna

It has been shown previously that an extremal Reissner-Nordstr\"om or an extremal Kerr black hole cannot be overcharged or overspun by a test particle if radiative and self-force effects are neglected. In this paper, we consider extremal…

General Relativity and Quantum Cosmology · Physics 2014-04-02 Yuan Zhang , Sijie Gao

In this article, we test the validity of the weak cosmic censorship conjecture (wCCC) in the background of a quantum Kerr-de Sitter (qKdS) black hole, incorporating exact backreaction from quantum matter fields. Using a test particle…

High Energy Physics - Theory · Physics 2026-05-19 Ankit Anand , Ankur Dey

Some interesting consequences of spacelike matter shells are presented, in particular the possibility of travelling through Cauchy horizons and violating the strong cosmic censorship principle. These show that the weak energy condition does…

General Relativity and Quantum Cosmology · Physics 2009-11-07 Wenceslao S. German , Ian G. Moss

We investigate whether the Strong Cosmic Censorship (SCC) Conjecture can be reinstated in Reissner-Nordstr\"om-de Sitter (RNdS) black holes by introducing non-minimal couplings between the electromagnetic and scalar fields in…

General Relativity and Quantum Cosmology · Physics 2023-05-23 Jie Jiang , Jia Tan

We investigate weak cosmic censorship conjecture in charged torus-like black hole by the complex scalar field scattering. Using the relation between the conserved quantities of a black hole and the scalar field, we can calculate the change…

General Physics · Physics 2020-10-28 Wei Hong , Berong Mu , Jun Tao

Inspired by the recent discovery of a violation of strong cosmic censorship (SCC) for the near-extremal Reissner-Nordstr\"om black holes in de Sitter space (RN-dS), we investigate if the weak cosmic censorship conjecture (WCCC) can also be…

High Energy Physics - Theory · Physics 2024-05-14 Feng-Li Lin , Bo Ning

Christodoulou's formulation of Strong Cosmic Censorship (SCC) holds true for Kerr-de Sitter black holes. On the other hand, Reissner-Nordstr\"om-de Sitter black holes violate SCC. We do a detailed scan of the parameter space of…

General Relativity and Quantum Cosmology · Physics 2024-04-08 Alex Davey , Oscar J. C. Dias , David Sola Gil

If a black hole can accrete a body whose spin or charge would send the black hole parameters over the extremal limit, then a naked singularity would presumably form, in violation of the cosmic censorship conjecture. We review some previous…

General Relativity and Quantum Cosmology · Physics 2014-11-21 Ted Jacobson , Thomas P. Sotiriou

We examine the problem of overcharging extremal and near-extremal black hole solutions of Einstein-Gauss-Bonnet gravity in any dimension, generalizing the result in general relativity. We show that as in the case of general relativity, it…

General Relativity and Quantum Cosmology · Physics 2019-12-11 Rajes Ghosh , C. Fairoos , Sudipta Sarkar

Gravitational collapse of radiation shells in a non self-similar higher dimensional spherically symmetric spacetime is studied. Strong curvature naked singularities form for a highly inhomogeneous collapse, violating the cosmic censorship…

General Relativity and Quantum Cosmology · Physics 2009-11-07 S G Ghosh , R V Saraykar , A Beesham

The ``cosmic censorship conjecture'' asserts that all singularities arising from gravitational collapse are hidden within black holes. We investigate this conjecture in a setup of interest for tests of General Relativity: black hole…

General Relativity and Quantum Cosmology · Physics 2015-12-09 Vitor Cardoso , Leonel Queimada

Recent researches of the novel $4D$ Einstein-Gauss-Bonnet (EGB) gravity have attracted great attention. In this paper, we investigate the validity of the weak cosmic censorship conjecture for a novel $4D$ charged EGB black hole with test…

General Relativity and Quantum Cosmology · Physics 2020-12-04 Si-Jiang Yang , Jun-Jie Wan , Jing Chen , Jie Yang , Yong-Qiang Wang

It has been recently argued by Hertog, Horowitz and Maeda, that generic reasonable initial data in asymptotically anti deSitter, spherically symmetric, space-times within an Einstein-Higgs theory, will evolve toward a naked singularity, in…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Miguel Alcubierre , Jose A. Gonzalez , Marcelo Salgado , Daniel Sudarsky

We investigate the weak cosmic censorship conjecture (WCCC) violation through the absorption of a charged, rotating test particle by Kerr Newman spacetime in modified gravity (KN MOG). The result is sensitive to multiple factors, including…

General Relativity and Quantum Cosmology · Physics 2025-08-26 Waqar Ahmad , Abdul Rehman Kashif

Motivated by the recent researches of black holes with NUT charge, we investigate the validity of the weak cosmic censorship conjecture for Kerr-Taub-NUT black hole with a test massive scalar field and a test particle, respectively. For the…

General Relativity and Quantum Cosmology · Physics 2020-04-01 Si-Jiang Yang , Jing Chen , Jun-Jie Wan , Shao-Wen Wei , Yu-Xiao Liu

This paper is a further development of the approach to weak cosmic censorship proposed by the authors in Ref. 5. We state and prove a modified version of that work's main result under significantly relaxed assumptions on the asymptotic…

General Relativity and Quantum Cosmology · Physics 2009-11-11 W. Rudnicki , R. J. Budzynski , W. Kondracki

Is Cosmic Censorship special to General Relativity, or can it survive a violation of equivalence principle? Recent studies have shown that singularities in Lorentz violating Einstein-Aether (or Horava-Lifhsitz) theories can lie behind a…

General Relativity and Quantum Cosmology · Physics 2016-05-11 Michael Meiers , Mehdi Saravani , Niayesh Afshordi

We investigate extremal electrically charged black holes in Einstein-Maxwell-dilaton theory with a cosmological constant inspired by string theory. These solutions are not static, and a timelike singularity eventually appears which is not…

High Energy Physics - Theory · Physics 2010-01-06 James H. Horne , Gary T. Horowitz

The weak cosmic censorship conjecture states that the black hole singularity is hidden inside the event horizon of the black hole, making it impossible for an external observer to measure. In this study, we investigate the weak cosmic…

General Relativity and Quantum Cosmology · Physics 2025-01-03 Meirong Tang , Lai Zhao , Zhaoyi Xu
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