Scalar absorption: Black holes versus wormholes

Abstract

We study the absorption of massless scalar waves in a geometry that interpolates between the Schwarzschild solution and a wormhole that belongs to the Morris-Thorne class of solutions. In the middle of the interpolation branch, this geometry describes a regular black hole. We use the partial wave approach to compute the scalar absorption cross section in this geometry. Our results show that black holes and wormholes present distinctive absorption spectra. We conclude, for instance, that the wormhole results are characterized by the existence of quasibound states which generate Breit-Wigner-like resonances in the absorption spectrum.

arXiv comment10 pages, 13 figures. Accepted for publication in Physical Review D

References in corpus (33)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
• GW151226: Observation of Gravitational Waves from a 22-Solar-Mass Binary Black Hole Coalescence
• GW170104: Observation of a 50-Solar-Mass Binary Black Hole Coalescence at Redshift 0.2
• Quasi-Normal Modes of Stars and Black Holes
• Local Supermassive Black Holes, Relics of Active Galactic Nuclei and the X-ray Background
• Formation and evaporation of non-singular black holes
• GW170608: Observation of a 19-solar-mass Binary Black Hole Coalescence
• Geodesic stability, Lyapunov exponents and quasinormal modes
• A Physical Model for the Co-evolution of QSOs and of their Spheroidal Hosts
• Supermassive Black Holes in Galactic Nuclei: Past, Present and Future Research
• Is the gravitational-wave ringdown a probe of the event horizon?
• Traversable wormholes: Some simple examples
• New Regular Black Hole Solution from Nonlinear Electrodynamics
• Notes on non-singular models of black holes
• Black-bounce to traversable wormhole
• Universailty of Low Energy Absorption Cross-sections for Black Holes
• Light rings as observational evidence for event horizons: long-lived modes, ergoregions and nonlinear instabilities of ultracompact objects
• Wormholes as Black Hole Foils
• Echoes of Kerr-like wormholes
• Gravitational signature of Schwarzschild black holes in dynamical Chern-Simons gravity
• Universality of high-energy absorption cross sections for black holes
• Ringing of the regular black-hole/wormhole transition
• Absorption of a massive scalar field by a charged black hole
• Charged Ellis Wormhole and Black Bounce
• Absorption of planar massless scalar waves by Bardeen regular black holes
• Absorption of planar massless scalar waves by Kerr black holes
• Low-frequency scalar absorption cross sections for stationary black holes
• Massive and charged scalar field in Kerr-Newman spacetime: Absorption and superradiance
• Absorption by black hole remnants in metric-affine gravity
• Scalar absorption by charged rotating black holes
• Spectral lines of extreme compact objects
• On-Axis scalar absorption cross section of Kerr-Newman black holes: Geodesic analysis, sinc and low-frequency approximations

Cited by in corpus (18)

• Can different black holes cast the same shadow?
• Scalar perturbations around rotating regular black holes and wormholes: quasi-normal modes, ergoregion instability and superradiance
• Tideless Traversable Wormholes surrounded by cloud of strings in $f(R)$ gravity
• Transition from Regular Black Holes to Wormholes in Covariant Effective Quantum Gravity: Scattering, Quasinormal Modes, and Hawking Radiation
• Rotating spacetime: black-bounces and quantum deformed black hole
• Black Bounces with multiple throats and anti-throats
• Asymmetric wormholes in Palatini $f(\mathcal{R})$ gravity: Energy conditions, absorption and quasibound states
• Trapping Horizons of the Evolving Charged Wormhole and Black Bounce
• Evaporation of a Kerr-black-bounce by emission of scalar particles
• Scalar scattering by black holes and wormholes
• Transmission of low-energy scalar waves through a traversable wormhole
• Compact objects in quadratic Palatini gravity generated by a free scalar field
• Orbits around a black bounce spacetime
• Spectral lines of dirty wormholes
• Absorption by stringy black holes
• Shadows and optical appearance of black bounces illuminated by a thin accretion disk
• Hairy black holes via gravitational decoupling: light rings, absorption and spectral lines
• Bardeen-Kiselev black hole with cosmological constant