Publications (27)
Non-singular bouncing cosmology in gravity with energy condition violations
A. Zhadyranova, M. Koussour, V. Zhumabekova +3
The singularity and inflationary problems have posed significant challenges for understanding the universe's origin and evolution. Bouncing cosmology has emerged as a promising alt…
The -dimensional charged AdS black holes solutions in polytropic dark energy from Barrow entropy
Yassine Sekhmani, Bidyut Hazarika, P. Phukon +3
This paper mainly aims to solve the Anti deSitter Black Holes (AdS BH) under the Barrow entropy under polytropic gas fluid, especially the Chaplygin Gas. First, we develop this las…
Observational constraints on viscous cosmology in gravity
M. Koussour, Alnadhief H. A. Alfedeel, S. Muminov +1
We investigate the late-time cosmic acceleration within the framework of viscous gravity, where the gravitational action depends on both the torsion scalar and the m…
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…
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…
Possible wormholes in generalized geometry-matter coupling gravity induced by the Dekel-Zhao dark matter profile
A. Errehymy, O. Donmez, A. Syzdykova +4
In the late 1980s, Morris and Thorne led in theoretical physics by creating solutions to wormholes and formulating the crucial requirements for safe traversability of wormholes. Th…
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…
Energy conditions in gravity
Y. Myrzakulov, O. Donmez, M. Koussour +3
We are experiencing a golden age of experimental cosmology, with exact and accurate observations being used to constrain various gravitational theories like never before. Alongside…
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…
Topological AdS black holes surrounded by Chaplygin dark fluid: from stability to geometrothermodynamic analysis
Y. Sekhmani, G. G. Luciano, J. Rayimbaev +3
Implementing the concept of Dark Fluid with a Chaplygin-like equation of state within General Relativity, we construct a new higher-dimensional, static, and spherically symmetric a…
Holographic dark energy as a source for slowly rotating wormholes: Implications for null geodesics and shadows
A. Errehymy, S. K. Maurya, M. Govender +4
In this work, we explore for the first time slowly rotating traversable wormholes embedded in holographic dark energy. We focus on three representative holographic dark energy mode…
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 densi…
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…
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-l…
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…
Cosmological constraints on time-varying cosmological terms: A study of FLRW universe models with CDM cosmology
M. Koussour, N. Myrzakulov, J. Rayimbaev
This paper explores models of the FLRW universe that incorporate a time-varying cosmological term . Specifically, we assume a power-law form for the cosmological term as a f…
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 $Î…
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 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…
Divergence-free deceleration and energy conditions in non-minimal gravity
A. Zhadyranova, M. Koussour, Zh. Kanibekova +4
We investigate the divergence-free parametric form of the deceleration parameter within the simplest non-minimal matter-geometry coupling in gravity, where is the Ricc…
Modified cosmology in gravity
Y. Myrzakulov, Alnadhief H. A. Alfedeel, M. Koussour +3
In this letter, we investigate cosmology within the framework of modified gravity using the non-linear model , where , , and …
Phase structure of charged AdS black holes surrounded by exotic fluid with modified Chaplygin equation of state
Y. Sekhmani, J. Rayimbaev, G. G. Luciano +2
By considering the concept of the modified Chaplygin gas (MCG) as a single fluid model unifying dark energy and dark matter, we construct a static, spherically charged black hole (…
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…
Topological Signatures and Geometrothermodynamics of Critical Phenomena in Regularized Maxwell Black Holes
Y. Sekhmani, G. G. Luciano, S. K. Maurya +4
We study the thermodynamic topology and microscopic interaction properties of charged black holes in RegMax gravity, focusing on the role of the coupling parameter . Using the…
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 .…
Probing geometrically perturbed strange stars with minimal decoupling using millisecond pulsar timing observations
K. N. Singh, S. K. Maurya, A. Errehymy +3
We construct a gravitationally decoupled anisotropic strange star model using the minimal geometric deformation approach with a MIT bag equation of state and an additional source s…
Kalb-Ramond Black Holes Sourced by ModMax Electrodynamics: Some Perturbative Properties in the Phantom Sector
Y. Sekhmani, A. Baruah, S. K. Maurya +4
We formulate and analyze a new class of electrically charged black hole (BH) solutions in Lorentz-violating gravity, where nonlinear ModMax electrodynamics is nonminimally coupled…