Field sources for Simpson-Visser spacetimes
KA Bronnikov, RK Walia - Physical Review D, 2022 - APS
Simpson-Visser (SV) spacetimes are the simplest globally regular modifications of the
Schwarzschild, Reissner-Nordsröm and other black hole solutions of general relativity. They …
Schwarzschild, Reissner-Nordsröm and other black hole solutions of general relativity. They …
Black bounces, wormholes, and partly phantom scalar fields
KA Bronnikov - Physical Review D, 2022 - APS
Simpson and Visser recently proposed a phenomenological way to avoid some kinds of
space-time singularities by replacing a parameter whose zero value corresponds to a …
space-time singularities by replacing a parameter whose zero value corresponds to a …
Source of black bounces in general relativity
ME Rodrigues, MVS Silva - Physical Review D, 2023 - APS
Black bounces are spacetimes that can describe, depending on certain parameters, black
holes or wormholes. In this work, we use a method to obtain the matter content that …
holes or wormholes. In this work, we use a method to obtain the matter content that …
Regular black holes as an alternative to black bounce
KA Bronnikov - Physical Review D, 2024 - APS
The so-called black-bounce mechanism of singularity suppression, proposed by Simpson
and Visser, consists of replacing the spherical radius r in the metric tensor with r 2+ a 2, a …
and Visser, consists of replacing the spherical radius r in the metric tensor with r 2+ a 2, a …
Weak Gravitational lensing by phantom black holes and phantom wormholes using the Gauss–Bonnet theorem
In this paper, we study the deflection of light by a class of phantom black hole and wormhole
solutions in the weak limit approximation. More specifically, in the first part of this work we …
solutions in the weak limit approximation. More specifically, in the first part of this work we …
From static to rotating to conformal static solutions: rotating imperfect fluid wormholes with (out) electric or magnetic field
M Azreg-Aïnou - The European Physical Journal C, 2014 - Springer
We derive a shortcut stationary metric formula for generating imperfect fluid rotating
solutions, in Boyer–Lindquist coordinates, from spherically symmetric static ones. We …
solutions, in Boyer–Lindquist coordinates, from spherically symmetric static ones. We …
Regular black holes in gravity coupled to nonlinear electrodynamics
We obtain a class of regular black hole solutions in four-dimensional f (R) gravity, R being
the curvature scalar, coupled to a nonlinear electromagnetic source. The metric formalism is …
the curvature scalar, coupled to a nonlinear electromagnetic source. The metric formalism is …
Image of a regular phantom compact object and its luminosity under spherical accretions
We have studied the shadow and its luminosity for a static and regular phantom compact
object under the static spherical accretion and the infalling spherical accretion, respectively …
object under the static spherical accretion and the infalling spherical accretion, respectively …
Static anisotropic solutions in f(T) theory
MH Daouda, ME Rodrigues, MJS Houndjo - The European Physical …, 2012 - Springer
In previous work, we undertook to study static and anisotropic content in f (T) theory and
obtained new spherically symmetric solutions considering a constant torsion and some …
obtained new spherically symmetric solutions considering a constant torsion and some …