The Influence of Modification of Gravity on the Dynamics of Radiating Spherical Fluids

Abstract

We explore the evolutionary behaviors of compact objects in a modified gravitational theory with the help of structure scalars. Particularly, we consider the spherical geometry coupled with heat and radiation emitting shearing viscous matter configurations. We construct structure scalars by splitting the Riemann tensor orthogonally in $f(R,T)$ gravity with and without constant $R$ and $T$ constraints, where $R$ is the Ricci scalar and $T$ is the trace of the energy-momentum tensor. We investigate the influence of modification of gravity on the physical meaning of scalar functions for radiating spherical matter configurations. It is explicitly demonstrated that even in modified gravity, the evolutionary phases of relativistic stellar systems can be analyzed through the set of modified scalar functions.

arXiv comment25 pages, no figure, version accepted for publication in Physical Review D

References in corpus (55)

• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Extended Theories of Gravity
• Introduction to Modified Gravity and Gravitational Alternative for Dark Energy
• f(R,T) gravity
• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
• Planck 2013 results. I. Overview of products and scientific results
• BICEP2 I: Detection Of B-mode Polarization at Degree Angular Scales
• Curvature Quintessence
• Beyond the Cosmological Standard Model
• A Joint Analysis of BICEP2/Keck Array and Planck Data
• Cosmological Tests of Modified Gravity
• BICEP2 / Keck Array VI: Improved Constraints On Cosmology and Foregrounds When Adding 95 GHz Data From Keck Array
• Low surface brightness galaxies rotation curves in the low energy limit of $R^n$ gravity : no need for dark matter?
• Reconstruction of f(R, T) gravity describing matter dominated and accelerated phases
• Unified phantom cosmology: inflation, dark energy and dark matter under the same standard
• Reconstruction of some cosmological models in f(R,T) gravity
• Inflationary cosmology in modified gravity theories
• Black holes, cosmological solutions, future singularities, and their thermodynamical properties in modified gravity theories
• f(R, T, R_μνT^μν) gravity phenomenology and ΛCDM universe
• Further matters in space-time geometry: $f(R,T,R_{\mu \nu }{T}^{\mu \nu })$ gravity
• Spherically symmetric dissipative anisotropic fluids: A general study
• Structure and evolution of self-gravitating objects and the orthogonal splitting of the Riemann tensor
• Dark Matter from R^2-gravity
• Integrated Sachs-Wolfe effect from the cross correlation of WMAP3 year and the NRAO VLA sky survey data: New results and constraints on dark energy
• Reconstructing $f(R,T)$ gravity from holographic dark energy
• On the role of density inhomogeneity and local anisotropy in the fate of spherical collapse
• Fourth order gravity: equations, history, and applications to cosmology
• Jeans analysis of self-gravitating systems in f(R)-gravity
• A high redshift detection of the integrated Sachs-Wolfe effect
• Shearing Expansion-free Spherical Anisotropic Fluid Evolution
• Gravitational collapse in f(R) theories
• On the Role of Electric Charge and Cosmological Constant in Structure Scalars
• Cosmological viable f(R,T) dark energy model: dynamics and stability
• Time-dependent matter instability and star singularity in $F(R)$ gravity
• Dark matter and dark energy as a effects of Modified Gravity
• Relativistic models of magnetars: Nonperturbative analytical approach
• Electromagnetic Field and Cylindrical Compact Objects in Modified Gravity
• Expansion-Free Evolving Spheres Must Have Inhomogeneous Energy Density Distributions
• Dissipative collapse of axially symmetric, general relativistic, sources: A general framework and some applications
• Instability of Meridional Axial System in f(R) Gravity
• Explosive phenomena in modified gravity
• Inflation and dark energy from f(R) gravity
• The instabilities and (anti)-evaporation of Schwarzschild-de Sitter black holes in modified gravity
• Energy Density Inhomogeneities with Polynomial $f(R)$ Cosmology
• The Raychaudhuri equation in homogeneous cosmologies
• Initial data and spherical dust collapse
• R^2 Dark Matter
• Role of Pressure in Quasi-Spherical Gravitational Collapse
• Modified gravity: walk through accelerating cosmology
• Universe acceleration in modified gravities: $F(R)$ and $F(T)$ cases
• Dark Energy and Dark Matter in $f(R)$ Gravity and an Alternative Chameleon Mechanism

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