Detailed Information on Publication Record
2015
Quasinormal modes of test fields around regular black holes
ABDUJABBAROV, Ahmadjon, Zdeněk STUCHLÍK, Bobir TOSHMATOV and Bobomurat AHMEDOVBasic 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:
Organization unit
Faculty of Philosophy and Science in Opava
UT WoS
000353286900001
Keywords in English
black hole spacetimes; test fields; WKB approach
Tags
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.