Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A

S Vagnozzi, R Roy, YD Tsai, L Visinelli… - … and Quantum Gravity, 2023 - iopscience.iop.org
Horizon-scale images of black holes (BHs) and their shadows have opened an
unprecedented window onto tests of gravity and fundamental physics in the strong-field …

Gravitational decoupling for axially symmetric systems and rotating black holes

E Contreras, J Ovalle, R Casadio - Physical Review D, 2021 - APS
We introduce a systematic and direct procedure to generate hairy rotating black holes by
deforming a spherically symmetric seed solution. We develop our analysis in the context of …

Hairy black holes by gravitational decoupling

J Ovalle, R Casadio, E Contreras… - Physics of the Dark …, 2021 - Elsevier
Black holes with hair represented by generic fields surrounding the central source of the
vacuum Schwarzschild metric are examined under the minimal set of requirements …

A simple protocol to construct solutions with vanishing complexity by Gravitational Decoupling

E Contreras, Z Stuchlik - The European Physical Journal C, 2022 - Springer
In this work we develop a simple protocol to construct interior solutions through Gravitational
Decoupling by the Minimal Gemetric Deformation extended satisfying the vanishing …

Class I approach as MGD generator

F Tello-Ortiz, SK Maurya, Y Gomez-Leyton - The European Physical …, 2020 - Springer
In this work we build a relativistic anisotropic admissible compact structures. To do so we
combine the class I approach with gravitational decoupling in order to generate the …

Isotropization and complexity analysis of decoupled solutions in theory

M Sharif, T Naseer - The European Physical Journal Plus, 2022 - Springer
This paper formulates some new exact solutions to the field equations by means of minimal
gravitational decoupling in the context of\(f ({\mathbb {R}},{\mathbb {T}})\) gravity. For this …

Gravitational decoupling minimal geometric deformation model in modified f (R, T) gravity theory

SK Maurya, A Errehymy, KN Singh, F Tello-Ortiz… - Physics of the Dark …, 2020 - Elsevier
The present paper is devoted to investigating the possibility of getting stellar interiors for
ultra-dense compact spherical systems portraying an anisotropic matter distribution …

Ultracompact stars with polynomial complexity by gravitational decoupling

M Carrasco-Hidalgo, E Contreras - The European Physical Journal C, 2021 - Springer
In this work we construct an ultracompact star configuration in the framework of Gravitational
Decoupling by the Minimal Geometric Deformation approach. We use the complexity factor …

Stellar models with like-Tolman IV complexity factor

J Andrade, E Contreras - The European Physical Journal C, 2021 - Springer
In this work, we construct stellar models based on the complexity factor as a supplementary
condition which allows to close the system of differential equations arising from the …

Exploring physical properties of minimally deformed strange star model and constraints on maximum mass limit in f (𝒬) gravity

SK Maurya, G Mustafa, M Govender… - Journal of Cosmology …, 2022 - iopscience.iop.org
Our current investigation is inherently linked to the observations of gravitational waves from
the GW190814 event which suggests that the source of the signals can be ascribed to a …