114 citations · 1.7k across the 59 of their papers we have counts for
21 papers · 1 filter
Investigating the dark energy phenomenon in cosmological models with observational constraints
S. Myrzakulova, M. Koussour, N. Myrzakulov
This paper explores the dark energy phenomenon within the context of gravity theory. Two specific non-linear models are considered: $f(R,L_m)=\frac{R}{2}+L_…
Scalar field dark energy: Insights into cosmological evolution and black hole accretion
M. Koussour, Y. Sekhmani, Alnadhief H. A. Alfedeel +2
We propose a novel approach to parameterize the equation of state for Scalar Field Dark Energy (SFDE) and use it to derive analytical solutions for various cosmological parameters.…
A comprehensive parametrization approach for the Hubble parameter in scalar field dark energy models
M. Koussour, N. Myrzakulov, S. Myrzakulova +1
This study proposes a novel parametrization approach for the dimensionless Hubble parameter i.e. in the context of scalar field dark energy models. The par…
Constraining the cosmological model of modified gravity: Phantom dark energy and observational insights
M. Koussour, N. Myrzakulov, Alnadhief H. A. Alfedeel +1
Despite the significant accomplishments of general relativity, numerous unresolved issues persist in our understanding of the cosmos. One of the most perplexing challenges is the o…
Cosmological implications of the constant jerk parameter in gravity theory
N. Myrzakulov, M. Koussour, Alnadhief H. A. Alfedeel +1
This study delves into modified gravity theories that are equivalent to General Relativity but involve the torsion or non-metricity scalar instead of the curvature scalar. Specific…
Modeling cosmic acceleration with a generalized varying deceleration parameter
M. Koussour, N. Myrzakulov, Alnadhief H. A. Alfedeel +2
Understanding the accelerating expansion of the Universe remains a fundamental challenge in modern cosmology. In this paper, we investigate a cosmological model parametrized by a g…
Constrained evolution of effective equation of state parameter in non-linear dark energy model: Insights from Bayesian analysis of cosmic chronometers and Pantheon samples
N. Myrzakulov, M. Koussour, Alnadhief H. A. Alfedeel +1
We conduct a Bayesian analysis of recent observational datasets, specifically the Cosmic Chronometers (CC) dataset and Pantheon samples, to investigate the evolution of the EoS par…
Impact of dark energy on the equation of state in light of the latest cosmological data
N. Myrzakulov, M. Koussour, Alnadhief H. A. Alfedeel +1
We reconstruct the effective Equation of State (EoS) within the framework of General Relativity (GR) theory in a homogeneous and isotropic FLRW Universe, which is assumed to be com…
Quintessence-like features in the late-time cosmological evolution of symmetric teleparallel gravity
N. Myrzakulov, M. Koussour, A. Mussatayeva
In this study, we investigate the cosmological history within the framework of modified gravity, which proposes an alternative theory of gravity where the gravitational forc…
Constraining the cosmological model using recent observational data
N. Myrzakulov, M. Koussour, Alnadhief H. A. Alfedeel +1
In this paper, we consider a comprehensive investigation of the cosmological model described by (where represents a free parameter) in light of the most rece…
Cosmological constraints on dark energy in gravity: A parametrized perspective
A. Mussatayeva, N. Myrzakulov, M. Koussour
In this paper, we focus on the parametrization of the effective equation of state (EoS) parameter within the framework of symmetric teleparallel gravity. Here, the gravitati…
Observational Constraints on Hybrid Scale Factor in f(Q,T) Gravity with Anisotropic Space-Time
S. A. Narawade, M. Koussour, B. Mishra
In this paper, we present an accelerating cosmological model by constraining the free parameters using the cosmological datasets in an extended symmetric teleparallel gravity for t…
A new cosmological model with quadratic expansion
N. Myrzakulov, M. Koussour, Dhruba Jyoti Gogoi
We present a new cosmological model capable of reproducing late-time acceleration, i.e. by supporting certain parametrizatio…
Constrained gravity accelerating cosmological model and its dynamical system analysis
S. A. Narawade, M. Koussour, B. Mishra
In this paper, we have presented an accelerating cosmological model of the Universe in an extended symmetric teleparallel gravity or gravity. The parametric form of the Hu…
Observational constraints on two cosmological models of theory
M. Koussour, Avik De
In the past few years, theories have drawn a lot of research attention in replacing Einstein's theory of gravity successfully. The current study examines the novel cosmologi…
Anisotropic Universe in gravity, a novel study
Tee-How Loo, M. Koussour, Avik De
theory of gravity is very recently proposed to incorporate within the action Lagrangian, the trace of the energy-momentum tensor along with the non-metricity scalar $Q…
Observational constraints on a logarithmic scalar field dark energy model and black hole mass evolution in the Universe
Dan Wang, M. Koussour, Adnan Malik +2
We propose a logarithmic parametrization form of energy density for the scalar field dark energy in the framework of the standard theory of gravity, which supports the necessary tr…
Constant sound speed and its thermodynamical interpretation in gravity
M. Koussour, Simran Arora, Dhruba Jyoti Gogoi +2
On the basis of homogeneous and isotropic Friedmann-Lemaitre-Robertson-Walker (FLRW) geometry, solutions to the issues of cosmic acceleration and dark energy are being put forth wi…
Quasinormal Modes of Black holes in gravity
Dhruba Jyoti Gogoi, Ali Övgün, M. Koussour
In this work, we have studied the quasinormal modes of a black hole in a model of the type in gravity by using a rece…
A New Diagnostic of Dark Energy in General Relativity Theory
N. Myrzakulov, M. Koussour, Dhruba Jyoti Gogoi
In this paper, we propose a new parametrization of dark energy based on the diagnostic tool behavior. For this purpose, we investigate a functional form of the that…
A model-independent method with phantom divide line crossing in Weyl-type gravity
M. Koussour
We investigate the history of the cosmos using an extension of symmetric teleparallel gravity, namely Weyl-type gravity, where represents the non-metricity scalar of s…