Traversable double-throat wormhole solutions are constructed as localized perturbations of the Ellis-Bronnikov metric in a string cloud background, localizing null energy condition violations to the throat vicinities while supporting the inter-throat region with non-exotic matter.
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A single-function deformation of 3D eta-Einstein metrics produces 4D Einstein spacetimes sourced by a string cloud, covering FLRW, Kantowski-Sachs, LRS Bianchi, Taub-NUT-(A)dS, and Reissner-Nordstrom-(A)dS solutions with spherical, planar or hyperbolic symmetry.
Periodic orbits in Euler-Heisenberg black holes surrounded by perfect fluid dark matter produce burst-like gravitational wave signals whose amplitude and frequency content are modified by both dark matter density and QED parameters.
Euler-Heisenberg coupling and surrounding matter fields modify the temperature profile, stability structure, and critical point location of AdS black holes, while changing Hawking radiation sparsity, photon sphere, and shadow size.
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Traversable double-throat wormholes in a string cloud background
Traversable double-throat wormhole solutions are constructed as localized perturbations of the Ellis-Bronnikov metric in a string cloud background, localizing null energy condition violations to the throat vicinities while supporting the inter-throat region with non-exotic matter.
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Geometric deformations of symmetric spacetimes with a string cloud
A single-function deformation of 3D eta-Einstein metrics produces 4D Einstein spacetimes sourced by a string cloud, covering FLRW, Kantowski-Sachs, LRS Bianchi, Taub-NUT-(A)dS, and Reissner-Nordstrom-(A)dS solutions with spherical, planar or hyperbolic symmetry.
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Equatorial periodic orbits and gravitational wave signatures in Euler-Heisenberg black holes surrounded by perfect fluid dark matter
Periodic orbits in Euler-Heisenberg black holes surrounded by perfect fluid dark matter produce burst-like gravitational wave signals whose amplitude and frequency content are modified by both dark matter density and QED parameters.
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Thermodynamic and Radiative Properties of Euler-Heisenberg AdS Black Holes Surrounded by Quintessence and Dark Matter with a Cloud of Strings
Euler-Heisenberg coupling and surrounding matter fields modify the temperature profile, stability structure, and critical point location of AdS black holes, while changing Hawking radiation sparsity, photon sphere, and shadow size.