Evolution of braneworld Kerr-Newman naked singularities

@article{65735,
   author = {Blaschke, Martin and Stuchlík, Zdeněk and Hensh, Sudipta},
   article_number = {8},
   doi = {http://dx.doi.org/10.1103/PhysRevD.105.084069},
   keywords = {braneworld ;Kerr-Newman naked singularities;charched black holes;particles},
   language = {eng},
   issn = {2470-0010},
   journal = {Physical Review D},
   title = {Evolution of braneworld Kerr-Newman naked singularities},
   url = {https://journals.aps.org/prd/abstract/10.1103/PhysRevD.105.084069},
   volume = {105},
   year = {2022}
}

TY  - JOUR
ID  - 65735
AU  - Blaschke, Martin - Stuchlík, Zdeněk - Hensh, Sudipta
PY  - 2022
TI  - Evolution of braneworld Kerr-Newman naked singularities
JF  - Physical Review D
VL  - 105
IS  - 8
SP  - "084069-1"-"084069-14"
EP  - "084069-1"-"084069-14"
SN  - 24700010
KW  - braneworld ;Kerr-Newman naked singularities;charched black holes;particles
UR  - https://journals.aps.org/prd/abstract/10.1103/PhysRevD.105.084069
N2  - 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.
ER  - 

BLASCHKE, Martin, Zdeněk STUCHLÍK and Sudipta HENSH. Evolution of braneworld Kerr-Newman naked singularities. \textit{Physical Review D}. 2022, vol.~105, No~8, p.~''084069-1''-''084069-14'', 14 pp. ISSN~2470-0010. Available from: https://dx.doi.org/10.1103/PhysRevD.105.084069.