Exact regular black hole solutions with de Sitter cores and Hagedorn fluid

V Vertogradov, A Övgün - Classical and Quantum Gravity, 2024 - iopscience.iop.org
Exact regular black hole solutions with de sitter cores and hagedorn fluid Page 1 Classical
and Quantum Gravity ACCEPTED MANUSCRIPT Exact regular black hole solutions with de …

Dynamical Black Holes: Apparent Horizon Versus Energy Conditions

V Vertogradov - arxiv preprint arxiv:2410.10582, 2024 - arxiv.org
Dynamical black holes have an apparent horizon as one of their characteristics. The later
might be null, time-like, or space-like surfaces that define the evolution of a black hole. Our …

[HTML][HTML] A simple model of magnetic universe without singularity associated with a quadratic equation of state

PH Chavanis - The European Physical Journal Plus, 2024 - Springer
A model of magnetic universe based on nonlinear electrodynamics has been introduced by
Kruglov (Phys Rev D 92: 123523, 2015). This model describes an early inflation era …

Formation of regular black hole from baryonic matter

V Vertogradov, A Övgün, D Shatov - arxiv preprint arxiv:2502.00521, 2025 - arxiv.org
We investigate regular black hole formation through the gravitational collapse of baryonic
matter characterized by a time-and radius-dependent coefficient of equation of state. Our …

Black hole with a de Sitter core: classical and quantum features

N Heidari, V Vertogradov, A Övgün - arxiv preprint arxiv:2412.05072, 2024 - arxiv.org
This work examines the implications of a black hole featuring a de Sitter core. We begin by
analyzing the spacetime and event horizon in the presence of de Sitter core. Then the partial …

Regular Black Hole from gravitational collapse of dust and radiation

V Vertogradov - arxiv preprint arxiv:2501.13739, 2025 - arxiv.org
A black hole is the end state of the gravitational collapse of massive stars. However, a typical
black hole contains a singularity and to avoid singularity formation we have to violate a …

[HTML][HTML] Black hole shadow: Experimental test of different models and shadow of dynamical Hayward black hole

VD Vertogradov, AV Shakun… - Physics of Complex …, 2024 - cyberleninka.ru
Recent observations of black hole shadows have revolutionized our ability to probe gravity
in extreme environments. This manuscript presents a novel analytic model of the shadow of …