114 citations · 1.7k across the 59 of their papers we have counts for
59 papers
Testing the viability of gravity models via effective equation of state constraints
M. Koussour, O. Donmez, S. Bekov +3
This paper rigorously examines the potential of the theory as a promising framework for understanding the dark sector of the universe, particularly in relation…
Constraints on CDM cosmology using Cosmic Chronometers and Supernova data
Yerlan Myrzakulov, M. Koussour, M. Bulanbay +2
In this manuscript, we investigate the constraints on dynamical vacuum models within the framework of CDM cosmology by assuming a parameterization of the vacuum energy densit…
Bulk viscous matter in gravity: A path to cosmic acceleration
Kairat Myrzakulov, O. Donmez, M. Koussour +3
In this paper, we investigate the effects of varying bulk viscosity coefficients on cosmic evolution within the framework of teleparallel gravity. We foc…
Observational constraints on a generalized equation of state model
M. Koussour, S. Bekov, A. Syzdykova +3
We investigate the cosmological implications of a generalized total equation of state (EoS) model by constraining its parameters using observational datasets to effectively charact…
Observational constraints on freezing quintessence in a non-linear gravity
Yerlan Myrzakulov, M. Koussour, A. Caliskan +3
In this paper, we investigate the freezing quintessence scenario in late-time cosmic expansion using a non-linear gravity model, , where …
Observational analysis of late-time acceleration in gravity
Kairat Myrzakulov, M. Koussour, O. Donmez +3
In this study, we explored late-time cosmology within an extended class of theories based on gravity. This theory generalizes gravity by incorporating a non-mini…
Constraints on anisotropic properties of the universe in gravity theory
A. Zhadyranova, M. Koussour, V. Zhumabekova +3
Motivated by anomalies in cosmic microwave background observations, we investigate the implications of gravity in Bianchi type-I spacetime, aiming to characterize the uni…
Exploring cosmological evolution and constraints in teleparallel gravity
M. Koussour, A. Altaibayeva, S. Bekov +3
This study explores the extension of teleparallel gravity within the framework of general relativity, introducing an algebraic function dependent on the torsion scalar .…
Bouncing cosmologies and stability analysis in symmetric teleparallel gravity
M. Koussour, N. Myrzakulov
This paper is devoted to examining cosmological bouncing scenarios in the framework of the recently proposed symmetric teleparallel gravity (or gravity), where the non-metri…
Late-time cosmology in gravity: Analytical solutions and observational fits
Yerlan Myrzakulov, O. Donmez, M. Koussour +3
In this study, we examined the late-time cosmic expansion of the universe within the framework of gravity, where denotes the non-metricity and represents th…
Observational constraints on the equation of state of viscous fluid in gravity
M. Koussour, A. Altaibayeva, S. Bekov +3
In this paper, we investigate a cosmological model based on viscous gravity as a potential alternative to dark energy. This model incorporates bulk viscosity and is analyz…
Signature flips in time-varying cosmological models with observational data
Yerlan Myrzakulov, M. Koussour, M. Karimov +1
In this study, we investigate signature flips within the framework of cosmological models featuring a time-varying vacuum energy term . Specifically, we consider the power-la…
Constraining gravity with bulk viscosity
Y. Myrzakulov, O. Donmez, M. Koussour +3
We investigate the influence of bulk viscosity on late-time cosmic acceleration within an extended gravity framework, where the non-metricity is non-minimally coupl…
The dynamics of matter bounce cosmology in Weyl-type gravity
A. Zhadyranova, M. Koussour, S. Bekkhozhayev
In this work, we investigate the dynamics of bouncing cosmologies within the framework of Weyl-type gravity. Here, represents the non-metricity of the space-time, is d…
Exploring late-time cosmic acceleration: A study of a linear cosmological model using observational data
A. Zhadyranova, M. Koussour, S. Bekkhozhayev +2
Understanding the evolution of dark energy poses a significant challenge in modern cosmology, as it is responsible for the universe's accelerated expansion. In this study, we focus…
Constraints on bulk viscosity in gravity from H(z)/Pantheon+ data
M. Koussour, Abdelghani Errehymy, O. Donmez +4
In this study, we investigate the role of bulk viscosity in gravity in explaining late-time cosmic acceleration. This model, an extension of symmetric teleparallel gravity…
Exploring accelerated expansion in the universe: A study of gravity with parameterized EoS and cosmological constraints
M. Koussour, N. Myrzakulov, J. Rayimbaev +2
The study conducted in this research paper utilizes the gravity, where represents non-metricity and represents the trace of the energy-momentum tensor, to investig…
Exploring Universe acceleration through observational constraints via Hubble parameter reconstruction
M. Koussour, N. Myrzakulov, M. K. M. Ali
In this article, we introduce an innovative parametric representation of the Hubble parameter, providing a model-independent means to explore the dynamics of an accelerating cosmos…
Bouncing behavior in gravity: Phantom crossing and energy conditions
M. Koussour, N. Myrzakulov, Javlon Rayimbaev +2
In this work, we investigate the bouncing behavior of the universe within the framework of gravity, using a simple form of (where is a f…
Cosmic expansion beyond CDM: Investigating power-law and logarithmic corrections
M. Koussour, N. S. Kavya, V. Venkatesha +1
The cosmic acceleration observed in the expansion of the Universe has sparked extensive research into the nature of dark energy, which is known to constitute approximately 70\% of…
Cosmic expansion history analysis with Hubble parametrization in gravity
M. Koussour, N. Myrzakulov
We propose a specialized parameterization for the Hubble parameter, inspired by CDM cosmology, to investigate the cosmic expansion history of the Universe. This parameterization…
Investigating the compatibility of exact solutions in Weyl-type gravity with observational data
M. Koussour, S. Myrzakulova, N. Myrzakulov
In this study, we investigate the dynamics of the Universe during the observed late-time acceleration phase within the framework of the Weyl-type theory. Specifically, we…
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.…