Throat effects on shadows of Kerr-like wormholes
Shinta Kasuya, Masataka KOBAYASHI
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.
Topics & Concepts
WormholeShadow (psychology)ThroatPhysicsBoundary (topology)Orbit (dynamics)Rotating black holeClassical mechanicsHorizonAstronomyMathematical analysisMathematicsMedicinePsychologyEngineeringAnatomyPsychotherapistAerospace engineeringAstrophysical Phenomena and ObservationsPulsars and Gravitational Waves ResearchStreptococcal Infections and Treatments