104 citations · 919 across the 35 of their papers we have counts for
36 papers
Solutions for neutron stars in General Relativity from a complexity structure scalar boundary condition
Robert S. Bogadi, Megandhren Govender, Genly Leon +1
A new condition involving the complexity factor, a structure scalar arising from the orthogonal splitting of the Riemann tensor, is generated at the boundary of a spherically symme…
Relativistic stellar collapse of initially static configurations
Keshlan S. Govinder, Megandhren Govender, Sunil Maharaj
We study the dynamics of a radiating relativistic star in the presence of the electromagnetic field and the cosmological constant. The evolution of the model originates from an ini…
Exploration of Zero-Complexity Compact Stars in Higher Dimensions under the Finch-Skea Background
Shyam Das, Megandhren Govender, Kevin Reddy +1
Motivated by the recent extension of Herrera's gravitational complexity to arbitrary higher-dimensional spacetimes, we investigate exact compact-star models that satisfy the vanish…
Influence of pressure anisotropy and non-metricity parameter on mass-radius relation and stability of millisecond pulsar in gravity
S. K. Maurya, Ksh. Newton Singh, G. Mustafa +3
In this study we explore the astrophysical implications of pressure anisotropy on the physical characteristics of millisecond pulsars within the framework of gravity, {in pa…
An Eternal gravitational collapse in theory of gravity and their astrophysical implications
Annu Jaiswal, Rajesh Kumar, Sudhir Kumar Srivastava +1
In this work, we explore the eternal collapsing phenomenon of a stellar system (e.g., a star) within the framework of gravity and investigate some new aspects of the continu…
Black hole formation in gravitational collapse and their astrophysical implications
Annu Jaiswal, Rajesh Kumar, Sudhir Kumar Srivastava +2
In this work, we have investigated a novel aspect of black hole (BH) formation during the collapse of a self-gravitating configuration. The exact solution of the Einstein field equ…
The effect of gravitational decoupling on constraining the mass and radius for the secondary component of GW190814 and other self-bound strange stars in f(Q)-gravity theory
S. K. Maurya, K. N. Singh, M. Govender +2
Inspired by the conundrum of the gravitational event, GW190814 which brings to light the coalescence of a 23 black hole with a yet to be determined secondary component…
Lie symmetry approach to the time-dependent Karmarkar condition
Andronikos Paliathanasis, Robert S. Bogadi, Megandhren Govender
We obtain solutions of the time-dependent Einstein Field Equations which satisfy the Karmarkar condition via the method of Lie symmetries. Spherically symmetric spacetime metrics a…
Physical Implications of Pure Lovelock Geometry on Stellar Structure
Ksh. Newton Singh, Megandhren Govender, Sudan Hansraj +1
We construct an exact anisotropic star model with a linear barotropic equation of state and with Finch-Skea potential within the framework of pure Lovelock gravity. A comparison wi…
Lie Symmetries, Painlevé analysis and global dynamics for the temporal equation of radiating stars
Genly Leon, Megandhren Govender, Andronikos Paliathanasis
We study the temporal equation of radiating stars by using three powerful methods for the analysis of nonlinear differential equations. Specifically, we investigate the global dyna…
Gravitationally decoupled strange star model beyond standard maximum mass limit in Einstein-Gauss-Bonnet gravity
S. K. Maurya, Ksh. Newton Singh, M. Govender +1
The recent theoretical advance known as the Minimal Geometric Deformation (MGD) method has initiated a renewed interest in investigating higher curvature gravitational effects in r…
Charged compact star in gravity in Tolman-Kuchowicz spacetime
Pramit Rej, Piyali Bhar, Megan Govender
In this current study, our main focus is to model a specific charged compact star SAX J 1808.4-3658 (M = 0.88 ,\, R = 8.9 km) within the realm of modified gra…
Temporal evolution of a radiating star via Lie symmetries
Andronikos Paliathanasis, Megandhren Govender, Genly Leon
In this work, we present for the first time the general solution of the temporal evolution equation arising from the matching of a conformally flat interior to the Vaidya solution.…
Stability and Horizon Formation during Dissipative Collapse
Nolene F. Naidu, Robert S. Bogadi, Anand Kaisavelu +1
We investigate the role played by density inhomogeneities and dissipation on the final outcome of collapse of a self-gravitating sphere. By imposing a perturbative scheme on the th…
A new class of viable and exact solutions of EFE's with Karmarkar conditions: An application to cold star modeling
Neeraj Pant, Megandhren Govender, Satyanarayana Gedela
In this work we present a theoretical framework within Einstein's classical general relativity which models stellar compact objects such as PSR J1614-2230 and SAX J1808.4-3658. The…
Charged anisotropic strange stars in Brans-Dicke gravity with a massive scalar field through embedding approach
S. K. Maurya, Ksh. Newton Singh, M. Govender +1
In this exposition, we seek solutions of the Einstein-Maxwell field equations in the presence of a massive scalar field cast in the Brans-Dicke (BD) formalism which describes charg…
Revisiting Vaidya-Tikekar stellar model in the linear regime
Ranjan Sharma, Shyam Das, Megan Govender +1
We obtain a new class of solutions by revisiting the Vaidya-Tikekar stellar model in the linear regime. Making use of the Vaidya and Tikekar metric ansatz [J. Astrophys. Astron. {\…
Strange stars in the framework of higher curvature gravity
Sudan Hansraj, Megandhren Govender, Lushen Moodly +1
We study the influence of higher curvature effects on stellar structure and conclude that the properties of stars are greatly impacted when such terms are dynamic. In particular th…
Expanding, shearing and accelerating isotropic plane symmetric universe with conformal Kasner geometry
Sudan Hansraj, Megandhren Govender, Narenee Mewalal
We construct a model of a universe filled with a perfect fluid with isotropic particle pressure. The anisotropic plane symmetric Kasner spacetime is used as a seed metric and throu…
Charged compact star model in Einstein-Maxwell-Gauss-Bonnet gravity
Piyali Bhar, Megan Govender
Present paper provides a model of static charged anisotropic fluid sphere in the EinsteinMaxwell- GaussBonnet (EMGB) theory of gravitation. We select KB anstz as the metric co-effi…
Generating physically realizable stellar structures via embedding
S. K. Maurya, M. Govender
In this work we present an exact solution of the Einstein-Maxwell field equations describing compact, charged objects within the framework of classical general relativity. Our mode…
Anisotropic stars for spherically symmetric spacetimes satisfying the Karmarkar condition
S. K. Maurya, B. S. Ratanpal, M. Govender
A new class of solution describing an anisotropic stellar configuration satisfying Karmarkar's condition i.e. spherically symmetric metric of embedding class 1, is reported. It has…
Physical viability of fluid spheres satisfying the Karmarkar condition
Ksh. Newton Singh, Neeraj Pant, M. Govender
We obtain a new solution of the TOV-equation for an anisotropic fluid distribution by imposing the Karmarkar condition. In order to close the system of equations we postulate an in…
A comparative study between EGB gravity and GTR by modelling compact stars
Piyali Bhar, Megan Govender, Ranjan Sharma
In this paper we utilise the Krori-Barua ansatz to model compact stars within the framework of Einstein- Gauss-Bonnet (EGB) gravity. The thrust of our investigation is to carry out…