Shadow images of Kerr-like wormholes

Abstract

Investigations of shadows of astrophysical entities constitute a major source of insight into the evolution of compact objects. Such effects depend on the nature of the compact object and arise on account of the strong gravitational lensing that casts a shadow on the bright background. We consider the Kerr-like wormhole spacetime (Phys.\ Rev.\ D 97:024040, 2018), which is a modification of the Kerr black hole that degenerates into wormholes for nonzero values of the deviation parameter ${\lambda }^2$. The results suggest that the Kerr spacetime can reproduce far away from the throat of the wormhole. We obtain the shapes of the shadow for the Kerr-like wormholes and discuss the effect of the spin $a$, the inclination angle ${\theta }_0$, and the deviation parameter ${\lambda }^2$ on the size and nature of the shadow. As a consequence, it is discovered that the shadow is distorted due to the spin as well as the deviation parameter and the radius of the shadow decreases with ${\lambda }^2$ if the ADM mass of the Kerr-like wormholes is considered.

arXiv comment21 pages, 5 figures, accepted version for publication in CQG

References in corpus (57)

• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• Characterization of the LIGO detectors during their sixth science run
• Traversable wormholes with arbitrarily small energy condition violations
• Phantom energy traversable wormholes
• Shadows of Kerr black holes with scalar hair
• Measurement of the Kerr Spin Parameter by Observation of a Compact Object's Shadow
• Advection-Dominated Accretion and the Black Hole Event Horizon
• Photon Regions and Shadows of Kerr-Newman-NUT Black Holes with a Cosmological Constant
• Influence of a plasma on the shadow of a spherically symmetric black hole
• Shadow of rotating regular black holes
• Morris-Thorne wormholes with a cosmological constant
• Modified-gravity wormholes without exotic matter
• A new method for shadow calculations: application to parameterised axisymmetric black holes
• Apparent shape of super-spinning black holes
• Shadow of a rotating braneworld black hole
• Observing the shadow of Einstein-Maxwell-Dilaton-Axion black hole
• Null geodesics and shadow of a rotating black hole in extended Chern-Simons modified gravity
• Shadow of five-dimensional rotating Myers-Perry black hole
• Stability of phantom wormholes
• Wormholes as Black Hole Foils
• Shadow of a Kaluza-Klein rotating dilaton black hole
• Einstein-Gauss-Bonnet traversable wormholes satisfying the weak energy condition
• Echoes of Kerr-like wormholes
• Photon Rings around Kerr and Kerr-like Black Holes
• No observational proof of the black-hole event-horizon
• A coordinate-independent characterization of a black hole shadow
• The Shadow of a Rotating Traversable Wormhole
• Shadow of Kerr-Taub-NUT black hole
• Nonminimal curvature-matter coupled wormholes with matter satisfying the null energy condition
• Wormhole Shadows
• Shadows of rotating wormholes
• Measuring the Kerr spin parameter of regular black holes from their shadow
• The Event Horizon of Sagittarius A*
• Shapes of rotating nonsingular black hole shadows
• Euclidean Wormholes in String Theory
• Shape and position of the shadow in the $\delta =2$ Tomimatsu-Sato space-time
• Shadows of Multi-Black Holes: Analytic Exploration
• Non-exotic matter wormholes in a trace of the energy-momentum tensor squared gravity
• Quantifying energy condition violations in traversable wormholes
• Shadows of rotating five-dimensional charged EMCS black holes
• Black Hole Shadows of Charged Spinning Black Holes
• Einstein-Cartan wormhole solutions
• The Event Horizon of M87
• Imaging an Event Horizon: submm-VLBI of a Super Massive Black Hole
• Evolving Lorentzian wormholes supported by phantom matter and cosmological constant
• Exactly solvable model of wormhole supported by phantom energy
• Wormhole with varying cosmological constant
• Wormholes with nonexotic matter in Born-Infeld gravity
• Volume Integral Theorem for Exotic Matter
• Wormholes supported by phantom-like modified Chaplygin gas
• Shadow of charged wormholes in Einstein-Maxwell-dilaton theory
• Exotic solutions in General Relativity: Traversable wormholes and 'warp drive' spacetimes
• First gamma-rays from galaxy clusters. Preliminary evidence of the association of galaxy clusters with EGRET unidentified gamma-ray sources
• Modified Chaplygin Traversable Wormholes
• Can a wormhole supported by only small amounts of exotic matter really be traversable?
• A single model of traversable wormholes supported by generalized phantom energy or Chaplygin gas
• Euclidean wormholes with minimally coupled scalar fields

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• High energy particle collisions in static, spherically symmetric black-hole-like wormholes
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• Massless Dirac Perturbations of black holes in f(Q) gravity: quasinormal modes and weak deflection angle
• Thin-shell wormholes in de Rham-Gabadadze-Tolley massive gravity
• Comment on "Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A*"
• Static axionlike dark matter clouds around magnetized rotating wormholes -- probe limit case
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