Quasinormal modes of test fields around regular black holes

Abstract

We study scalar, electromagnetic and gravitational test fields in the Hayward, Bardeen and Ayón-Beato-García regular black hole spacetimes and demonstrate that the test fields are stable in all 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 greybody factors, namely the transmission and reflection coefficients of scattered scalar, electromagnetic and gravitational waves. We show that damping of the QNMs in regular black hole spacetimes is suppressed in comparison to the case of Schwarzschild black holes, and increasing charge parameter of the regular black holes increases reflection and decreases transmission factor of incident waves for each of the test fields.

13 pages, 11 figures, 4 tables

References in corpus (12)

• Rotating Regular Black Hole Solution
• Circular motion of neutral test particles in Reissner-Nordström spacetime
• Towards constraining of the Horava-Lifshitz gravities
• Circular geodesics of Bardeen and Ayon-Beato-Garcia regular black-hole and no-horizon spacetimes
• Equatorial circular orbits in the Kerr-de Sitter spacetimes
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• Charged scalar field instability between the event and cosmological horizons
• Gravitational instability of simply rotating AdS black holes in higher dimensions
• Stability and thermodynamics of brane black holes
• Quasi-normal frequencies: Key analytic results
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• Ultra-high energy particle collisions in a regular spacetime without blackholes or naked singularities

Cited by in corpus (13)

• Shadow cast and deflection of light by charged rotating regular black holes
• Weak gravitational lensing of regular black holes with cosmic strings using the Gauss-Bonnet theorem
• Dynamics of test particles around a Bardeen black hole surrounded by perfect fluid dark matter
• Relaxations of perturbations of spacetimes in general relativity coupled to nonlinear electrodynamics
• Ergosphere and shadow of a rotating regular black hole
• Quasinormal modes of renormalization group improved Dymnikova regular black holes
• Quasinormal modes, shadow and greybody factors of 5D electrically charged Bardeen black holes
• Regular multihorizon black holes in $f(G)$ gravity with nonlinear electrodynamics
• Quasinormal modes and shadows of a new family of Ayón-Beato-Garc\'ıa black holes
• Nonsingular black hole chemistry in $4D$ Einstein-Gauss-Bonnet gravity
• Greybody Factor for a Rotating Bardeen Black Hole by Perfect Fluid Dark Matter
• Orbital motion of test particles in regular Hayward black hole space-time
• Quasi Normal Modes of Ayon-Beato Garcia Regular Black Holes For Scalar Field