Plane Symmetric Inflationary Universe with Hybrid Expansion Law and Time Varying Λ
نویسندگان
چکیده
منابع مشابه
Formation of Large Structures in the Acceleration Universe with a Hybrid Expansion Law
In the current paper, we have studied the effect of dark energy on for-mation where dark energy exists in the background. For this purpose, we used both WMAP9 and Planck data to study how the radius changes with redshift in these mod-els. We used different data sets to fix the cosmological parameters to obtain a solution for a spherical region under collapse. The mechanism of structure formation f...
متن کاملInflationary Lambda-universe with Time-varying Fundamental Constants
We solve the Universe for dark energy represented by a variable cosmological constant, along with a JBD (Jordan-Brans-Dicke) model with tine varying speed of light, entailing variable fine structure constant. Inflation is taken as the prevailing scenario, but we provide food for thought, to discuss how this model with fundamental constants applies to the present accelerating phase. Along with a...
متن کاملPlane-symmetric inhomogeneous magnetized viscous fluid universe with a variable Λ
The behavior of magnetic field in plane symmetric inhomogeneous cosmological models for bulk viscous distribution is investigated. The coefficient of bulk viscosity is assumed to be a power function of mass density (ξ = ξ0ρ n). The values of cosmological constant for these models are found to be small and positive which are supported by the results from recent supernovae Ia observations. Some p...
متن کاملformation of large structures in the acceleration universe with a hybrid expansion law
in the current paper, we have studied the effect of dark energy on for-mation where dark energy exists in the background. for this purpose, we used both wmap9 and planck data to study how the radius changes with redshift in these mod-els. we used different data sets to fix the cosmological parameters to obtain a solution for a spherical region under collapse. the mechanism of structure formation f...
متن کاملPlane-symmetric Inhomogeneous Bulk Viscous Cosmological Models with Variable Λ
In recent years cosmological models exhibiting plane symmetry have attracted the attention of various authors. At the present state of evolution, the universe is spherically symmetric and the matter distribution in it is isotropic and homogeneous. But in its early stages of evolution, it could have not had a smoothed out picture. Close to the big bang singularity, neither the assumption of sphe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Advanced Astronomy
سال: 2018
ISSN: 2312-7414
DOI: 10.14419/ijaa.v6i1.9551