Some New LRS Bianchi Type-I Bulk Viscous Cosmological Models with Decaying Ʌ-Term

Abstract

Locally rotationally symmetric Bianchi type-I cosmological models are examined in presence of bulk viscous fluid source and variable Ʌ-term. Consequences of four phenomenological decay of Ʌ have been discussed which are consistent with recent observations. Exact solutions of Einstein’s field equations are obtained by assuming a special law of variation for Hubble parameter, which yields a constant value of deceleration parameter. Some cosmological parameters are discussed.