Shadows of rotating wormholes

Abstract

We study shadows cast by a certain class of rotating wormholes and point out the crucial role of a rotating wormhole throat in the formation of a shadow. Overlooking this crucial role of a wormhole throat has resulted incomplete results in the previous studies on shadows of the same class of rotating wormholes. We explore the dependence of the shadows on the spin of the wormholes. We compare our results with that of the Kerr black hole. With increasing values of the spin, the shapes of the wormhole shadows start deviating considerably from that of the black hole. Such considerable deviation, if detected in future observations, may possibly indicate the presence of a wormhole. In other words, the results obtained here indicate that, through the observations of their shadows, the wormholes which are considered in this work and have reasonable spin, can be distinguished from a black hole.

22 pages, 6 figures, revised version, published in Phys. Rev. D

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Cited by in corpus (133)

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• Quasinormal Modes of Black Holes Surrounded by Dark Matter and Their Connection with the Shadow Radius
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• Wormholes in 4D Einstein-Gauss-Bonnet Gravity
• No-Hair Theorem in the Wake of Event Horizon Telescope
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• On the shadow of rotating traversable wormholes
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• Astrophysical Wormholes
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• Wormholes in exponential $f(R,T)$ gravity
• Reflection-asymmetric wormholes and their double shadows
• Einstein-Æther Gravity in the light of Event Horizon Telescope Observations of M87*
• Casimir Wormholes in Modified Symmetric Teleparallel Gravity
• Constraining alternatives to the Kerr black hole
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• Black hole shadow of a rotating scale--dependent black hole
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• Wormhole on the Brane with Ordinary Matter: The Broader View
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• Gravitational lensing and wormhole shadows
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