•  
  •  
 

Turkish Journal of Physics

DOI

10.3906/fiz-0810-23

Abstract

We study the Kantowski-Sachs cosmological model filled with viscous fluid in the presence of cosmological term \Lambda. To get a deterministic solution, a condition between metric potentials is used. The viscous coefficient of bulk viscous fluid is assumed to be a power function of mass density, whereas coefficient of shear viscosity is considered proportional to scale of expansion in the model. It is found that the cosmological constant \Lambda is positive and is a decreasing function of time, which is supported by results from recent supernova observations. Some physical and geometrical properties of the models are also discussed.

Keywords

Kantowski-Sachs viscous fluid model, cosmology, variable cosmological constant

First Page

155

Last Page

165

Download

Included in

Physics Commons

Share

COinS