Detailed Information on Publication Record
2022
Evolution of braneworld Kerr-Newman naked singularities
BLASCHKE, Martin, Zdeněk STUCHLÍK and Sudipta HENSHBasic 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
Článek v odborném periodiku
Field of Study
10308 Astronomy
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
RIV identification code
RIV/47813059:19630/22:A0000179
Organization unit
Institute of physics in Opava
UT WoS
000810510200010
Keywords in English
braneworld ;Kerr-Newman naked singularities;charched black holes;particles
Tags
Tags
International impact, Reviewed
Links
GA19-03950S, research and development project.
Změněno: 6/2/2023 10:04, Mgr. Pavlína Jalůvková
Abstract
V originále
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.