Late time Acceleration and Role of Skewness in Anisotropic models
arXiv:1407.7791 · doi:10.1007/s10509-013-1727-4
Abstract
We study cosmological models with anisotropy in expansion rates in the context of the recent observations predicting an accelerating universe. In the absence of any anisotropy in the cosmic fluid, it is shown that the role of skewness in directional Hubble rates is crucial in deciding the behavior of the model. We find that incorporation of skewness leads to a more evolving effective equation of state parameter.
arXiv comment15 pages, 4 figures, Astrophysics Space Science, 2014
References in corpus (21)
- Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
- Dynamics of dark energy
- Type Ia Supernova Discoveries at z>1 From the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution
- A Phantom Menace? Cosmological consequences of a dark energy component with super-negative equation of state
- Discovery of a Supernova Explosion at Half the Age of the Universe and its Cosmological Implications
- Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Data Processing, Sky Maps, and Basic Results
- The axis of evil
- Inflationary Universe with Anisotropic Hair
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Angular Power Spectra
- Imprints of a Primordial Preferred Direction on the Microwave Background
- The Little Rip
- Cosmic Microwave Background Quadrupole and Ellipsoidal Universe
- Models for Little Rip Dark Energy
- Phantom Cosmology without Big Rip Singularity
- Anisotropic Cosmological Constant and the CMB Quadrupole Anomaly
- Bayesian analysis of an anisotropic universe model: systematics and polarization
- Anisotropic Fluid and Bianchi Type III Model in f(R) Gravity
- Anisotropic Universe Models in Brans-Dicke Theory
- Stability of accelerating cosmology in two scalar-tensor theory: Little Rip versus de Sitter
- Phantom Inflation in Little Rip
Cited by in corpus (18)
- Kaluza-Klein cosmological model in gravity with
- Anisotropic dark energy model with a hybrid scale factor
- Cosmological models with a hybrid scale factor in an extended gravity theory
- Bianchi-V String Cosmological model with Dark Energy Anisotropy
- Anisotropic cosmological reconstruction in gravity
- Anisotropic solutions in f(R) Gravity
- Dark Energy Cosmological Models with General forms of Scale Factor
- Cosmological models with a Hybrid Scale Factor
- Unified Dark Fluid and Cosmic Transit Models in Brans-Dicke Theory
- Dynamical features of an anisotropic cosmological model
- Energy and momentum of Bianchi Type VI_h Universes
- Accelerating Dark Energy Cosmological Model in Two Fluid with Hybrid Scale Factor
- Role of Extended Gravity Theory in Matter Bounce Dynamics
- Cosmic Acceleration and Anisotropic models with Magnetic field
- Investigating the physical and geometrical parameters of the cosmological models with anisotropic background
- Stability, dark energy parameterization and swampland aspect of Bianchi Type- cosmological models with f(R, T)-gravity
- Brane Viscous Cosmology in the Plasma Era
- Cosmological models with Big rip and Pseudo rip Scenarios in extended theory of gravity