Echoes from Asymmetric Wormholes and Black Bounce

Abstract

The time evolution of the field perturbations in the wormhole and black bounce backgrounds are investigated. We find that the asymmetry of spacetime results in the asymmetry of the effective potential of the perturbed equation. The quasinormal modes are strongly dependent on the shapes of the effective potentials. Specifically, the signals of echoes arise in some wormhole cases and reflect the asymmetric properties of wormholes. We examine the features of echoes within different circumstances. Besides, the negative values of effective potentials usually imply the instability of the system. By analyzing some specific metrics, we find that the negative regions of effective potentials are enclosed by the black hole horizons in these cases. But this statement could be broken in asymmetric cases.

16 pages, 6 figures, Comments welcome

References in corpus (19)

• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• GW190521: A Binary Black Hole Merger with a Total Mass of $150M_{\odot }$
• First M87 Event Horizon Telescope Results. II. Array and Instrumentation
• First M87 Event Horizon Telescope Results. III. Data Processing and Calibration
• Quasinormal modes and Strong Cosmic Censorship
• Wormholes as Black Hole Foils
• Gravitational Lensing by Wormholes
• Regular black holes and black universes
• Traversable wormholes in Einstein-Dirac-Maxwell theory
• Traversable Wormholes in General Relativity
• Gravitational lensing in the Simpson-Visser black-bounce spacetime in a strong deflection limit
• Stability of Reissner-Nordström black hole in de Sitter background under charged scalar perturbation
• Quasinormal modes of scalarized black holes in the Einstein-Maxwell-Scalar theory
• Strong gravitational lensing by rotating Simpson--Visser black holes
• Wormholes without exotic matter: quasinormal modes, echoes and shadows
• Ghost D-branes
• Echoes of novel black-bounce spacetimes
• On an alternative mechanism for the black hole echoes

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• Ringing and echoes from black bounces surrounded by the string cloud
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• Evaporation of a Kerr-black-bounce by emission of scalar particles
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• Quantum gravitational corrections to the Schwarzschild spacetime and quasinormal frequencies
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• Echoes and quasi-normal modes of perturbations around Schwarzchild traversable wormholes
• On the Interaction between Ultralight Bosons and Quantum-Corrected Black Holes
• On the Structure of Black Bounces Sourced by Anisotropic Fluids
• Dyonic regular black bounce solutions in General Relativity
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• Echoes and quasinormal modes of asymmetric black bounces
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