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 …

Anisotropic Strange Star Model Beyond Standard Maximum Mass Limit by Gravitational Decoupling in f (Q) f(Q) Gravity

SK Maurya, KN Singh, SV Lohakare… - Fortschritte der …, 2022 - Wiley Online Library
The current theoretical development identified as the gravitational decoupling via Complete
Geometric Deformation (CGD) method that has been introduced to explore the nonmetricity …

Complexity-free solution generated by gravitational decoupling for anisotropic self-gravitating star in symmetric teleparallel f(Q)-gravity theory

SK Maurya, A Errehymy, MK Jasim, M Daoud… - The European Physical …, 2023 - Springer
In this work, we attempt to find an anisotropic solution for a compact star generated by
gravitational decoupling in f (Q)-gravity theory having a null complexity factor. To do this, we …

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 …

Analysis of some newly constructed compact models in f (R, T) theory

Y Feng, T Naseer, A Ashraf, D Sofuoğlu - Physica Scripta, 2024 - iopscience.iop.org
In this paper, black hole solutions are developed within the framework of f (R, T) gravity
through the minimal gravitational decoupling approach. By introducing a new source in the …

Anisotropic compact stars in complexity formalism and isotropic stars made of anisotropic fluid under minimal geometric deformation (MGD) context in gravity …

SK Maurya, A Errehymy, M Govender… - The European Physical …, 2023 - Springer
In this paper, we present an anisotropic solution for static and spherically symmetric self-
gravitating systems by demanding the vanishing of the complexity factor (Herrera in Phys …

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 …

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 …

Compact stars with dark matter induced anisotropy in complexity-free background and effect of dark matter on GW echoes

SK Maurya, KN Singh, A Aziz, S Ray… - Monthly Notices of the …, 2024 - academic.oup.com
In this work, we consider the vanishing complexity factor scenario which has opened up a
whole new way of generating solutions to the Einstein field equations for the spherically …