J 2022

Evolution of braneworld Kerr-Newman naked singularities

BLASCHKE, Martin; Zdeněk STUCHLÍK and Sudipta HENSH

Basic information

Original name

Evolution of braneworld Kerr-Newman naked singularities

Authors

BLASCHKE, Martin (203 Czech Republic, belonging to the institution); Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution) and Sudipta HENSH (356 India, belonging to the institution)

Edition

Physical Review D, 2022, 2470-0010

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10308 Astronomy

Country of publisher

United States of America

Confidentiality degree

is not subject to a state or trade secret

References:

URL

Impact factor

Impact factor: 5.000

RIV identification code

RIV/47813059:19630/22:A0000179

Organization unit

Institute of physics in Opava

DOI

https://doi.org/10.1103/PhysRevD.105.084069

UT WoS

000810510200010

EID Scopus

2-s2.0-85129770422

Keywords in English

braneworld ;Kerr-Newman naked singularities;charched black holes;particles

Tags

, RIV23, SGS-12-2019

Tags

International impact, Reviewed

Links

GA19-03950S, research and development project.
Changed: 6/2/2023 10:04, Mgr. Pavlína Jalůvková

Abstract

In the original language

We study evolution of the braneworld Kerr-Newman (K-N) naked singularities, namely their mass M, spin a, and tidal charge b characterizing the role of the bulk space, due to matter in-falling from Keplerian accretion disk. We construct the evolution in two limiting cases applied to the tidal charge. In the first case we assume b = const during the evolution, in the second one we assume that the dimensionless tidal charge beta b/M-2 = const. For positive values of the tidal charge the evolution is equivalent to the case of the standard K-N naked singularity under accretion of electrically neutral matter. We demonstrate that counterrotating accretion always converts a K-N naked singularity into an extreme K-N black hole and that the corotating accretion leads to a variety of outcomes. The conversion to an extreme K-N black hole is possible for naked singularity with dimensionless tidal charge beta < 0.25, and beta is an element of (0.25, 1) with sufficiently low spin. In other cases the accretion ends in a transcendental state. For 0.25 < beta < 1 this is a mining unstable K-N naked singularity enabling formally unlimited energy extraction from the naked singularity. In the case of beta > 1, the corotating accretion creates unlimited torodial structure of mater orbiting the naked singularity. Both nonstandard outcomes of the corotating accretion imply a transcendence of such naked singularity due to nonlinear gravitational effects.
Displayed: 31/10/2025 15:58