For cylindrical black strings, NED Lagrangians with a Maxwell weak-field limit cannot produce regular purely electric or dyonic cores; regular magnetic Bardeen/Hayward analogues exist but violate causality near the axis.
Black string bounce to traversable wormhole
6 Pith papers cite this work. Polarity classification is still indexing.
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Unimodular gravity with Maxwell sources yields regular black strings and BTZ black holes supported by a radially varying vacuum energy Λ(r) obtained as an integration constant.
Exact cylindrically symmetric black-hole and black-string solutions sourced by the Dekel-Zhao DM profile exhibit horizon disappearance above a critical inner slope and curvature singularities absent in the vacuum case.
Black bounce geometries exist in 2+1D f(R) gravity with scalar-nonlinear electrodynamics matter, including vanishing scalar curvature solutions whose viability is checked via scalaron mass and energy conditions.
Tidal forces in the Simpson-Visser spacetime produce Roche radii for stars that depend on observer type and regularization, with some disruptions occurring outside the event horizon for supermassive black holes.
Generalized Bardeen black holes show two topological defects of opposite winding numbers yielding zero total charge in their thermodynamic vector field, unlike Schwarzschild's single unstable branch, with regularization parameters shaping the phase structure.
citing papers explorer
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On regular black string spacetimes in nonlinear electrodynamics
For cylindrical black strings, NED Lagrangians with a Maxwell weak-field limit cannot produce regular purely electric or dyonic cores; regular magnetic Bardeen/Hayward analogues exist but violate causality near the axis.
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Regular Black Strings and BTZ Black Hole in Unimodular Gravity Supported by Maxwell Fields
Unimodular gravity with Maxwell sources yields regular black strings and BTZ black holes supported by a radially varying vacuum energy Λ(r) obtained as an integration constant.
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Cylindrically Symmetric Black Holes Sourced by Dekel-Zhao Dark Matter
Exact cylindrically symmetric black-hole and black-string solutions sourced by the Dekel-Zhao DM profile exhibit horizon disappearance above a critical inner slope and curvature singularities absent in the vacuum case.
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Three dimensional black bounces in $f(R)$ gravity
Black bounce geometries exist in 2+1D f(R) gravity with scalar-nonlinear electrodynamics matter, including vanishing scalar curvature solutions whose viability is checked via scalaron mass and energy conditions.
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Roche limit and stellar disruption in the Simpson--Visser spacetime
Tidal forces in the Simpson-Visser spacetime produce Roche radii for stars that depend on observer type and regularization, with some disruptions occurring outside the event horizon for supermassive black holes.
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Topological Thermodynamics of Generalized Bardeen Black Hole
Generalized Bardeen black holes show two topological defects of opposite winding numbers yielding zero total charge in their thermodynamic vector field, unlike Schwarzschild's single unstable branch, with regularization parameters shaping the phase structure.