J 2017

Generic rotating regular black holes in general relativity coupled to nonlinear electrodynamics

TOSHMATOV, Bobir, Zdeněk STUCHLÍK and Bobomurat AHMEDOV

Basic information

Original name

Generic rotating regular black holes in general relativity coupled to nonlinear electrodynamics

Authors

TOSHMATOV, Bobir (860 Uzbekistan, guarantor, belonging to the institution), Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution) and Bobomurat AHMEDOV (860 Uzbekistan)

Edition

Physical Review D, 2017, 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/47813059:19240/17:A0000022

Organization unit

Faculty of Philosophy and Science in Opava

UT WoS

000399807800009

Keywords in English

rotating black holes; no-horizon spacetimes; energy conditions; geodesic motion; nonlinear electrodynamics; epicyclic frequencies

Tags

International impact, Reviewed

Links

GB14-37086G, research and development project.
Změněno: 4/4/2018 15:27, RNDr. Jan Hladík, Ph.D.

Abstract

V originále

We construct regular rotating black hole and no-horizon spacetimes based on the recently introduced spherically symmetric generic regular black hole spacetimes related to electric or magnetic charge under nonlinear electrodynamics coupled to general relativity that for special values of the spacetime parameters reduce to the Bardeen and Hayward spacetimes. We show that the weak and strong energy conditions are violated inside the Cauchy horizons of these generic rotating black holes. We give the boundary between the rotating black hole and no-horizon spacetimes and determine the black hole horizons and the boundary of the ergosphere. We introduce the separated Carter equations for the geodesic motion in these rotating spacetimes. For the most interesting new class of the regular spacetimes, corresponding for magnetic charges to the Maxwell field in the weak field limit of the nonlinear electrodynamics, we determine the structure of the circular geodesics and discuss their properties. We study the epicyclic motion of a neutral particle moving along the stable circular orbits around the "Maxwellian" rotating regular black holes. We show that epicyclic frequencies measured by the distant observers and related to the oscillatory motion of the neutral test particle along the stable circular orbits around the rotating singular and regular Maxwellian black holes are always smaller than ones in the Kerr spacetime.