Analyzing the influence of geometrical deformation on photon sphere and shadow radius: A new analytical approach—Spherically symmetric spacetimes

V Vertogradov, A Övgün - Physics of the Dark Universe, 2024 - Elsevier
In this paper, we introduce a new approach to study the behavior of the photon sphere and
shadow radius. Our method uses extended gravitational decoupling and reveals two …

Hairy Kiselev black hole solutions

Y Heydarzade, M Misyura, V Vertogradov - Physical Review D, 2023 - APS
In the realm of astrophysics, black holes exist within nonvacuum cosmological backgrounds,
making it crucial to investigate how these backgrounds influence the properties of black …

Non-singular black hole by gravitational decoupling and some thermodynamic properties

M Misyura, A Rincon, V Vertogradov - Physics of the Dark Universe, 2024 - Elsevier
Gravitational decoupling allows us to obtain new solutions of general relativity. In this paper,
we obtain new solutions of the Einstein field equations which describe non-singular black …

Thermodynamical analysis with extended phase transition of AdS hairy black hole in gravitational decoupling theory

G Abbas, RH Ali, G Mustafa - Physica Scripta, 2024 - iopscience.iop.org
This article explores various thermodynamical aspects and the extended phase space of the
AdS hairy black hole within the context of gravitational decoupling. This study focused on …

Minimally deformed regular Hayward black hole solutions in Rastall theory

M Sharif, M Sallah - Physica Scripta, 2024 - iopscience.iop.org
We profit from the gravitational decoupling algorithm via the minimal deformation scheme
and extend the regular Hayward black hole, thereby obtaining novel black hole models in …

Analyzing the influence of geometrical deformation on photon sphere and shadow radius: A new analytical approach-stationary, and axisymmetric spacetime

V Vertogradov, A Övgün, RC Pantig - arxiv preprint arxiv:2405.05077, 2024 - arxiv.org
Black hole shadows and photon spheres offer valuable tools for investigating black hole
properties. Recent observations by the Event Horizon Telescope Collaboration have …

Influence of primary hair and plasma on intensity distribution of black hole shadows

V Vertogradov, M Misyura, P Bambhaniya - The European Physical …, 2025 - Springer
In this paper, we investigate the influence of primary hair (l) on the shadows of hairy
Schwarzschild and Reissner-Nordström black holes obtained through gravitational …

[HTML][HTML] Does a primary hair have an impact on the naked singularity formation in hairy Vaidya spacetime?

VD Vertogradov - Physics of Complex Systems, 2024 - cyberleninka.ru
We consider the gravitational collapse of Vaidya spacetime, which has been obtained using
the gravitational decoupling method. In this paper, we are interested in whether a primary …