32 citations · 123 across the 11 of their papers we have counts for
8 papers · 1 filter
Observational Constraints on the Dark Energy with a Quadratic Equation of State
Hossein Moshafi, Alireza Talebian, Ebrahim Yusofi +1
In this study, we introduce a novel late-time effective dark energy model characterized by a quadratic equation of state (EoS) and rigorously examine its observational constraints.…
Multiple transitions in vacuum dark energy and tension
Hossein Moshafi, Hassan Firouzjahi, Alireza Talebian
We study the effects of multiple transitions in the vacuum dark energy density on the tension problem. We consider a phenomenological model in which the vacuum energy density…
CMB lensing in a modified CDM model in light of the tension
Hossein Moshafi, Shant Baghram, Nima Khosravi
The observed discrepancy of the Hubble parameter measurements in the local universe with the cosmic microwave background (CMB) data may indicate a new physics. It is vital to test…
The Integrated Sachs-Wolfe Effect in the Bulk Viscous Dark Energy Model
B. Mostaghel, H. Moshafi, S. M. S. Movahed
We examine linear perturbation theory to evaluate the contribution of viscosity coefficient in the growing of dark matter perturbations in the context of the bulk viscous dark ener…
Are Cold Dynamical Dark Energy Models Distinguishable in the Light of the Data?
Aghileh S. Ebrahimi, M. Monemzadeh, H. Moshafi
In this paper we obtain observational constraints on three dynamical cold dark energy models ,include PL , CPL and FSL, with most recent cosmological data and investigate their imp…
Reconstruction of initial Asymptotic-de Sitter mode in light of the Planck data
Hossein Moshafi, Ata Sojasi, Ebrahim Yusofi +1
The recently relased \emph{Planck} data, emphasize that the background geometry of inflation is not pure de Sitter, but from the slow variation of Hubble parameter during the infla…
Non-minimal Derivative Coupling Scalar Field and Bulk Viscous Dark Energy
Behrang Mostaghel, Hossein Moshafi, S. M. S. Movahed
Inspired by thermodynamical dissipative phenomena, we consider bulk viscosity for dark fluid in a spatially flat two-component Universe. Our viscous dark energy model represents Ph…
Simultaneous effect of Modified Gravity and Primordial Non-Gaussianity in Large Scale Structure Observations
Nareg Mirzatuny, Shahram Khosravi, Shant Baghram +1
In this work we study the simultaneous effect of primordial non-Gaussianity and the modification of the gravity in framework on large scale structure observations. We show t…