Dynamical instability and expansion-free condition in gravity

I Noureen, M Zubair - The European Physical Journal C, 2015 - Springer
A dynamical analysis of a spherically symmetric collapsing star surrounded by a locally
anisotropic environment under an expansion-free condition is presented in f (R, T) f (R, T) …

Role of energy–momentum squared gravity on the dynamics of charged dissipative plane symmetric collapse

M Sharif, MZ Gul - Modern Physics Letters A, 2022 - World Scientific
This paper deals with the dynamics of charged plane symmetric collapse with dissipative
fluid distribution in the framework of energy–momentum squared gravity. For this purpose …

Cracking of compact objects with electromagnetic field

M Azam, SA Mardan, MA Rehman - Astrophysics and Space Science, 2015 - Springer
In this paper, we investigate the role of electromagnetic field on the stability regions of
charged self-gravitating compact objects by using the concept of cracking. For this purpose …

Fate of Electromagnetic Field on the Cracking of PSR J1614‐2230 in Quadratic Regime

M Azam, SA Mardan… - Advances in High Energy …, 2015 - Wiley Online Library
We study the cracking of compact object PSR J1614‐2230 in quadratic regime with
electromagnetic field. For this purpose, we develop a general formalism to determine the …

Expansion-free self-gravitating dust dissipative fluids

R Kumar, SK Srivastava - General Relativity and Gravitation, 2018 - Springer
The present study deals with the spherically symmetric distributions of dust dissipative fluids
with a central vacuum cavity, evolving under the condition of vanishing of expansion scalar …

Impact of extended Starobinsky model on evolution of anisotropic, vorticity-free axially symmetric sources

I Noureen, AA Bhatti, M Zubair - Journal of Cosmology and …, 2015 - iopscience.iop.org
We study the implications of R n extension of Starobinsky model on dynamical instability of
Vorticity-free axially symmetric gravitating body. The matter distribution is considered to be …

Effects of expansion-free condition on adiabatic collapse in f (G, T) gravity

R Ahmed - New Astronomy, 2024 - Elsevier
This study explores the impact of f (G, T) gravity, where G is the Gauss Bonnet invariant and
T is the trace of the energy–momentum tensor, on the adiabatic anisotropic spherical …

Cracking of some polytropic models via local density perturbations

M Azam, I Nazir - Canadian Journal of Physics, 2021 - cdnsciencepub.com
In this paper, we have checked the stability of some anisotropic charged generalized
polytropic models by using the concept of cracking, founded by Nasim and Azam (Astrophys …

Evolution of expansion-free spherically symmetric self-gravitating non-dissipative fluids and some analytical solutions

R Kumar, SK Srivastava - … Journal of Geometric Methods in Modern …, 2018 - World Scientific
We consider the distribution of spherically symmetric self-gravitating non-dissipative (but
anisotropic) fluids under the expansion-free condition which requires the existence of …

Stability analysis of expansion-free charged planar geometry

M Sharif, MZUH Bhatti - Astrophysics and Space Science, 2015 - Springer
This paper analyzes the stability of a collapsing matter distribution enclosed by plane
symmetry in the presence of electromagnetic field. The field equations, matching conditions …