Throat effects on shadows of Kerr-like wormholes

Abstract

We revisit to investigate shadows cast by Kerr-like wormholes. The boundary of the shadow is determined by unstable circular photon orbits. We find that, in certain parameter regions, the orbit is located at the throat of the Kerr-like wormhole, which was not considered in the literature. In these cases, the existence of the throat alters the shape of the shadow significantly, and makes it possible for us to differentiate it from that of a Kerr black hole.

arXiv comment8 pages, 19 figures, matches to published version

References in corpus (8)

• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
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• Echoes of Kerr-like wormholes
• The Shadow of a Rotating Traversable Wormhole
• Shadows of rotating wormholes
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Cited by in corpus (19)

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• Quasinormal Ringing and Shadows of Black Holes and Wormholes in Dark Matter-Inspired Weyl Gravity
• Rotating black hole mimicker surrounded by the string cloud
• Optical appearance of a thin-shell wormhole with a Hayward profile
• Black Hole Shadow with Soft Hair
• Chaotic photon orbits and shadows of a non-Kerr object described by the Hartle-Thorne spacetime
• Microlensing effects of wormholes associated to blackhole spacetimes
• Throat effects on strong gravitational lensing in Kerr-like wormholes
• Static axionlike dark matter clouds around magnetized rotating wormholes -- probe limit case
• Comment on "Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A*"
• Shadows and photon spheres in static and rotating traversable wormholes
• Topological dyonic black holes of massive gravity with generalized quasitopological electromagnetism
• Circular light orbits of a general, static, and spherical symmetrical wormhole with $Z_2$ symmetry
• Research on high-frequency quasi-periodic oscillations in black bounce-type spacetime
• Damour-Solodukhin Wormhole as a Black Hole Mimicker: The Role of Observers' Location
• Gravitational lensing by two photon spheres in a black-bounce spacetime in strong deflection limits
• Shadows cast by a class of rotating black bounces with an anisotropic fluid