Cosmic dynamics and qualitative study of Rastall model with spatial curvature

A Singh, GP Singh, A Pradhan - International Journal of Modern …, 2022 - World Scientific
We investigate the cosmic dynamics of Rastall gravity in nonflat Friedmann–Robertson–
Walker (FRW) space–time with barotropic fluid. In this context, we are concerned about the …

Quasinormal modes of black holes with non-linear-electrodynamic sources in Rastall gravity

DJ Gogoi, UD Goswami - Physics of the Dark Universe, 2021 - Elsevier
One of the notable modifications of General Relativity (GR) is the Rastall gravity. We have
studied the quasinormal modes of black holes in Rastall gravity in presence of non-linear …

Rastall gravity extension of the standard CDM model: theoretical features and observational constraints

Ö Akarsu, N Katırcı, S Kumar, RC Nunes… - The European Physical …, 2020 - Springer
We present a detailed investigation of the Rastall gravity extension of the standard Λ Λ CDM
model. We review the model for two simultaneous modifications of different nature in the …

Quasinormal modes of nonlinearly charged black holes surrounded by a cloud of strings in Rastall gravity

DJ Gogoi, R Karmakar, UD Goswami - International Journal of …, 2023 - World Scientific
In this paper, we obtain the black hole solution for the Ayón-Beato–García (ABG)-type black
hole surrounded by a cloud of strings in Rastall gravity and calculate the scalar quasinormal …

Aspects of some Rastall cosmologies

A Singh, KC Mishra - The European Physical Journal Plus, 2020 - Springer
Rastall gravity paradigm producing mechanism for realizing singular and non-singular
cosmologies has been investigated. A solution in Rastall gravity with flat spatial sections …

Evolution of the Universe with quintessence model in Rastall gravity

JK Singh, A Singh, SG Ghosh, SD Maharaj - Physica Scripta, 2024 - iopscience.iop.org
We investigate the Universe's evolution within the framework of Rastall gravity, which is an
extension of the standard ΛCDM model. Utilizing a linear parametrization of the Equation of …

Rapidly rotating neutron stars in gravity

FM da Silva, LCN Santos, CE Mota… - The European Physical …, 2023 - Springer
In this work, we study the influence of f (R, T) gravity on rapidly rotating neutron stars. First
we discuss the main aspects of this modified theory of gravity where the gravitational …

Qualitative aspects of Rastall gravity with barotropic fluid

A Singh, R Raushan, R Chaubey - Canadian Journal of …, 2021 - cdnsciencepub.com
We investigate the dynamical evolution of a homogeneous and isotropic flat universe filled
with a barotropic fluid satisfying the linear equation of state in Rastall gravity. Using the …

A dynamical system representation of generalized Rastall gravity

H Shabani, H Moradpour, AH Ziaie - Physics of the Dark Universe, 2022 - Elsevier
In this work we study the phase-space analysis of generalized Rastall gravity (GRG) which
has recently been introduced as a modification to the original version of Rastall gravity (RG) …

Possible existence of quark stars in Rastall gravity

A Banerjee, T Tangphati, A Pradhan - International Journal of …, 2023 - World Scientific
In this work, we consider static quark star (QS) within the framework of Rastall gravity.
Rastall gravity purports to be the nonconservative theory of gravity and an unusual …