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Dynamical analysis of cylindrically symmetric anisotropic sources in f(R, T) gravity

In this paper, we have analyzed the stability of cylindrically symmetric collapsing object filled with locally anisotropic fluid in f(R, T) theory, where R is the scalar curvature and T is the trace of stress-energy tensor of matter. Modified field equations and dynamical equations are constructed in f(R, T) gravity. The evolution or collapse equation is derived from dynamical ...

Evolution of axially symmetric anisotropic sources in f(R, T) gravity

We discuss the dynamical analysis in f(R, T) gravity (where R is the Ricci scalar and T is the trace of the energy momentum tensor) for gravitating sources carrying axial symmetry. The self-gravitating system is taken to be anisotropic and the line element describes an axially symmetric geometry avoiding rotation about the symmetry axis and meridional motions (zero vorticity case). ...

Dynamical instability and expansion-free condition in \(f(R, T)\) gravity

A dynamical analysis of a spherically symmetric collapsing star surrounded by a locally anisotropic environment under an expansion-free condition is presented in \(f(R,T)\) gravity, where \(R\) corresponds to the Ricci scalar and \(T\) stands for the trace of the energy momentum tensor. The modified field equations and evolution equations are reconstructed in the framework of ...

Shear-free condition and dynamical instability in f(R, T) gravity

The implications of the shear-free condition on the instability range of an anisotropic fluid in f(R, T) are studied in this manuscript. A viable f(R, T) model is chosen to arrive at stability criterion, where R is Ricci scalar and T is the trace of energy-momentum tensor. The evolution of a spherical star is explored by employing a perturbation scheme on the modified field ...

Dissipative spherical collapse of charged anisotropic fluid in \(f(R)\) gravity

H. Rizwana Kausar 1 Ifra Noureen 0 0 University of Management and Technology , Lahore, Pakistan 1 Centre for Applicable Mathematics and Statistics, University of Central Punjab , Lahore, Pakistan