J 2015

Quasinormal modes of test fields around regular black holes

ABDUJABBAROV, Ahmadjon, Zdeněk STUCHLÍK, Bobir TOSHMATOV and Bobomurat AHMEDOV

Basic information

Original name

Quasinormal modes of test fields around regular black holes

Authors

ABDUJABBAROV, Ahmadjon, Zdeněk STUCHLÍK, Bobir TOSHMATOV and Bobomurat AHMEDOV

Edition

Physical Review D, US - Spojené státy americké, 2015, 1550-7998

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

www

Organization unit

Faculty of Philosophy and Science in Opava

DOI

http://dx.doi.org/10.1103/PhysRevD.91.083008

UT WoS

000353286900001

Keywords in English

black hole spacetimes; test fields; WKB approach

Tags

UF

Tags

International impact, Reviewed

Links

GB14-37086G, research and development project.
Změněno: 27/1/2021 10:17, Mgr. Pavlína Jalůvková

Abstract

V originále

We study scalar, electromagnetic, and gravitational test fields in the Hayward, Bardeen, and Ayon-BeatoGarcia regular black hole spacetimes and demonstrate that the test fields are stable in all of these spacetimes. Using the sixth order WKB approximation of the linear "axial" perturbative scheme, we determine dependence of the quasinormal mode (QNM) frequencies on the characteristic parameters of the test fields and the spacetime charge parameters of the regular black holes. We give also the grey bodyfactors, namely, the transmission and reflection coefficients of scattered scalar, electromagnetic, and gravitational waves. We show that the damping of the quasinormal modes in regular black hole spacetimes is suppressed compared to the case of Schwarzschild black holes, and increasing the charge parameter of the regular black holes increases reflection and decreases the transmission factor of the incident waves for each of the test fields.
Displayed: 25/12/2024 08:11