TY - JOUR

T1 - Scalar perturbation around rotating regular black hole

T2 - Superradiance instability and quasinormal modes

AU - Li, Zhen

N1 - Publisher Copyright: © 2023 American Physical Society.

PY - 2023

Y1 - 2023

N2 - Black holes provide a natural laboratory to study particle physics and astrophysics. When black holes are surrounded by matter fields, there will be plenty of phenomena which can have observational consequences, from which we can learn about the matter fields as well as black hole spacetime. In this work, we investigate the massive scalar field in the vicinity of a newly proposed rotating regular black hole inspired by quantum gravity. We will especially investigate how this nonsingular spactime will affect the superradiance instability and quasinormal modes of the scalar filed. We derive the superradiant conditions and the amplification factor by using the matching-asymptotic method, and the quasinormal modes are computed through continued fraction method. In the Kerr limit, the results are in excellent agreements with previous research. We also demonstrate how the quasinormal modes will change as a function of black hole spin, regularity described by a parameter k and scalar field mass respectively, with other parameters taking specific values.

AB - Black holes provide a natural laboratory to study particle physics and astrophysics. When black holes are surrounded by matter fields, there will be plenty of phenomena which can have observational consequences, from which we can learn about the matter fields as well as black hole spacetime. In this work, we investigate the massive scalar field in the vicinity of a newly proposed rotating regular black hole inspired by quantum gravity. We will especially investigate how this nonsingular spactime will affect the superradiance instability and quasinormal modes of the scalar filed. We derive the superradiant conditions and the amplification factor by using the matching-asymptotic method, and the quasinormal modes are computed through continued fraction method. In the Kerr limit, the results are in excellent agreements with previous research. We also demonstrate how the quasinormal modes will change as a function of black hole spin, regularity described by a parameter k and scalar field mass respectively, with other parameters taking specific values.

U2 - 10.1103/PhysRevD.107.044013

DO - 10.1103/PhysRevD.107.044013

M3 - Journal article

AN - SCOPUS:85148297090

VL - 107

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 4

M1 - 044013

ER -