A new class of bulk viscous universe with time dependent deceleration parameter and Λ-term

Details A new class of bulk viscous universe with time dependent deceleration parameter and Λ-term A new class of bulk viscous universe with time dependent deceleration parameter and Λ-term

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ap%26ss.311..413p&link_type=abstract

Astrophysics and Space Science, Volume 311, Issue 4, pp.413-421

Astronomy and Astrophysics

Astrophysics

2

Scientific paper

A new class of exact solutions of Einstein’s field equations with a bulk viscous fluid for an LRS Bianchi type-Ia obtained by using a time dependent deceleration parameter and cosmological term Λ. The coefficient of bulk viscosity is assumed to be a power function of mass density ( ξ= ξ 0 ρ n ). We have obtained a general solution of the field equations from which six models of the universe are derived: exponential, polynomial and sinusoidal form respectively. The behaviour of these models of the universe are also discussed in the frame of reference of recent supernovae Ia observations.

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