Can mixed star-plus-wormhole systems mimic black holes?

Abstract

We consider mixed strongly gravitating configurations consisting of a wormhole threaded by two types of ordinary matter. For such systems, the possibility of obtaining static spherically symmetric solutions describing compact massive central objects enclosed by high-redshift surfaces (black-hole-like configurations) is studied. Using the standard thin accretion disk model, we exhibit potentially observable differences allowing to distinguish the mixed systems from ordinary black holes with the same masses.

19 pages, 7 figures, minor corrections to content, version published in JCAP

References in corpus (16)

• Wormholes as Black Hole Foils
• Instability of wormholes supported by a ghost scalar field. I. Linear stability analysis
• Compact stars made of fermionic dark matter
• Electromagnetic signatures of thin accretion disks in wormhole geometries
• Can accretion disk properties distinguish gravastars from black holes?
• Example of a stable wormhole in general relativity
• Astrophysics of Wormholes
• Black hole mimickers: regular versus singular behavior
• Spherical Boson Stars as Black Hole mimickers
• Cold black holes and conformal continuations
• Boson Stars with Nontrivial Topology
• Hiding a neutron star inside a wormhole
• Mixed neutron-star-plus-wormhole systems: Equilibrium configurations
• Magnetic fields in mixed neutron-star-plus-wormhole systems
• Hairy Wormholes and Bartnik-McKinnon Solutions
• Star-plus-wormhole systems with two interacting scalar fields

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• Quasi-periodic Oscillations in Rotating Ellis Wormhole Spacetimes
• Geodesic motion around traversable wormholes supported by a massless conformally-coupled scalar field
• Spinning Wormholes in Scalar-Tensor Theory
• Traversable Morris-Thorne-Buchdahl wormholes in quadratic gravity
• Symmetric and Asymmetric Wormholes Immersed In Rotating Matter
• Mixed neutron-star-plus-wormhole systems: Rotating configurations
• Radial perturbations of Ellis-Bronnikov wormholes in slow rotation up to second order
• Symmetric wormholes in Einstein-vector-Gauss-Bonnet theory
• Geodesics in Generalised Ellis-Bronnikov Spacetime Embedded in Warped 5D Background
• Dirac stars with wormhole topology