A5055814363- Cosmology and Gravitation Theories
- Pulsars and Gravitational Waves Research
- Black Holes and Theoretical Physics
- Geophysics and Gravity Measurements
- Ionosphere and magnetosphere dynamics
- Galaxies: Formation, Evolution, Phenomena
- Stellar, planetary, and galactic studies
- Earthquake Detection and Analysis
- Gamma-ray bursts and supernovae
- Solar and Space Plasma Dynamics
- GNSS positioning and interference
- Atmospheric chemistry and aerosols
- Atmospheric aerosols and clouds
- Astrophysical Phenomena and Observations
- State Capitalism and Financial Governance
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Geomagnetism and Paleomagnetism Studies
- Relativity and Gravitational Theory
- Advanced Differential Geometry Research
- High-pressure geophysics and materials
University of Nizwa
2015-2025
In this article we obtain a new anisotropic solution for Einstein's field equations of embedding class one metric. The represents realistic objects such as Her X-1 and RXJ 1856-37. We perform detailed investigation both by solving numerically the Einstein with pressure. physical features parameters depend on factor i.e. if anisotropy is zero everywhere inside star then density pressures will become metric turns out to be flat. report our results compare above mentioned two compact regards...
In the present paper we obtain an anisotropic analogue of Durgapal-Fuloria (1985) perfect fluid solution. The methodology consists contraction factor $\Delta$ by help both metric potentials $e^{\nu}$ and $e^{\lambda}$. Here consider $e^{\lambda}$ same as whereas is that given Lake (2003). field equations are solved change dependent variable method. solutions set mathematically thus obtained compared with physical properties some compact stars, strange star well white dwarf. It observed all...
Abstract This research article examines the impact of $$f({\mathcal {Q}},{\mathcal {T}})$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>f</mml:mi> <mml:mo>(</mml:mo> <mml:mi>Q</mml:mi> <mml:mo>,</mml:mo> <mml:mi>T</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> theory on geometry charged neutron stars filled with anisotropic matter configuration. Here, $${\mathcal {Q}}$$ represents non-metricity and {T}}$$ denotes trace energy-momentum tensor. We use a...
We present new anisotropic models for Buchdahl [H. A. Buchdahl, Phys. Rev. 116 (1959) 1027.] type perfect fluid solution. For this purpose, we started with metric potential [Formula: see text] same as and is monotonically increasing function suggested by Lake [K. Lake, D 67 (2003) 104015]. After that determine the pressure anisotropy factor help of both potentials propose well behaved general solution distribution. The physical quantities like energy density, radial tangential pressures,...
Abstract We presented a non-singular solution of Einstein’s field equations using gravitational decoupling by means complete geometric deformation (CGD) in the anisotropic domain for compact star models. In this approach both potentials are deformed as $$ \nu =\xi +\beta \,h(r)$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>ν</mml:mi><mml:mo>=</mml:mo><mml:mi>ξ</mml:mi><mml:mo>+</mml:mo><mml:mi>β</mml:mi><mml:mspace...
Abstract In this work, we study the role of vanishing complexity factor in generating self-gravitating compact objects under gravitational decoupling technique f ( Q )-gravity theory. To tackle problem, gravitationally decoupled action for modified ) gravity has been adopted form $${\mathscr {S}}={{\mathscr {S}}_{Q}}+{{\mathscr {S}}^{*}_{\theta }}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>S</mml:mi> <mml:mo>=</mml:mo> <mml:msub> <mml:mi>Q</mml:mi>...
This paper explores the generalized ghost dark energy model in framework of $f(\textsl{Q}, \textsl{L}_{m})$ gravity, where $\textsl{Q}$ represents non-metricity scalar and $\textsl{L}_{m}$ denotes matter-Lagrangian density. We take homogeneous isotropic universe with an ideal matter distribution examine a scenario interacting matter. then reconstruct to effects this extended gravitational on cosmic evolution. The behavior numerous parameters are explored corresponding distinct parametric...
Abstract In this paper, we present anisotropy-dependent well behaved non-singular solutions for static and spherically symmetric self-gravitating compact objects in the framework of $$f(\mathbb {Q})$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>f</mml:mi> <mml:mo>(</mml:mo> <mml:mi>Q</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> gravity assuming linear form {Q})=-\beta _1\, \mathbb {Q} - \beta _2$$ <mml:mo>=</mml:mo> <mml:mo>-</mml:mo> <mml:msub>...
Abstract The focus of this work is centered on determining whether traversable wormholes admitting Einasto density profile exist within the framework f ( R , T ) gravity. Using Morris–Thorne spacetime, we express wormhole configuration and formulate anisotropic gravitational equations for a particular linear modified model. Afterwards, by considering two different (constant variable) redshift functions, derive shape function examine its potential stability. developed functions conform to...
Abstract This paper addresses a new gravitationally decoupled anisotropic solution for the compact star model via minimal geometric deformation (MGD) approach. We consider non-singular well-behaved gravitational potential corresponding to radial component of seed spacetime and embedding Class I condition that determines temporal metric function solve system completely. However, two different well-known mimic approaches such as <?CDATA ${p}_{r}={{\rm{\Theta }}}_{1}^{1}$?> <mml:math...
A new static spherically symmetric interior solution has been derived using Gravitational Decoupling via Complete Geometric Deformation, satisfying the vanishing complexity which explores fundamental physical acceptability of stellar model. In current analysis, we present a systematic approach proposed by L. Herrera [Phys Rev D 97: 044010, 2018] and Contreras-Stuchlik [Eur Phys J C 82: 706, 2022] to derive complexity-free solution. We plotted graphical behavior energy density, radial...