Reflection-asymmetric wormholes and their double shadows

Abstract

We discuss construction and observational properties of wormholes obtained by connecting two Reissner-Nordstrom spacetimes with distinct mass and charge parameters. These objects are spherically symmetric, but not reflection-symmetric, as the connected spacetimes differ. The reflection-asymmetric wormholes may reflect a significant fraction of the infalling radiation back to the spacetime of its origin. We interpret this effect in a simple framework of the effective photon potential. Depending on the model parameters, image of such a wormhole seen by a distant observer (its "shadow") may contain a photon ring formed on the observer's side, photon ring formed on the other side of the wormhole, or both photon rings. These unique topological features would allow us to firmly distinguish this class of objects from Kerr black holes using radioastronomical observations.

9 pages, accepted in Phys. Rev. D

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Cited by in corpus (49)

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• Photon Ring and Observational Appearance of a Hairy Black Hole
• QED Effect on Black Hole Shadow
• Shadows of boson and Proca stars with thin accretion disks
• Gravitational lensing in the Simpson-Visser black-bounce spacetime in a strong deflection limit
• Photon Spheres and Spherical Accretion Image of a Hairy Black Hole
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• Revisiting the shadow of braneworld black holes
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• Dynamic wormhole geometries in hybrid metric-Palatini gravity
• Images of hairy Reissner-Nordström black hole illuminated by static accretions
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• Echoes from Hairy Black Holes
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• Parameterized non-relativistic limit of stellar structure equations in Ricci-based gravity theories
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• Echoes from bounded universes
• Traversable wormholes with multiple unstable critical curves
• Gravitational lensing by two photon spheres in a black-bounce spacetime in strong deflection limits
• Shadows of Lorentzian traversable wormholes
• Characterization of exotic matter in PT-symmetric wormholes
• Multi-ring images of thin accretion disk of a regular naked compact object
• PATOKA: Simulating Electromagnetic Observables of Black Hole Accretion
• Trace anomaly contributions to semi-classical wormhole geometries
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