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In the present work we have searched the existence of the late time acceleration of the universe with string fluid as source of matter in anisotropic Heckmann-Suchking space-time by using 287 high red shift $(0.3 leq zleq 1.4)$ SN Ia data of observed absolute magnitude along with their possible error from Union 2.1 compilation. It is found that the best fit values for $(Omega_{m})_{0}$, $(Omega_{Lambda})_{0}$, $(Omega_{sigma})_{0}$ and $(q)_{0}$ are 0.2820, 0.7177, 0.0002 $&$ -0.5793 respectively. Several physical aspects and geometrical properties of the model are discussed in detail.
In this paper, we have investigated $Lambda$CDM type cosmological model in Heckmann-Schucking space-time, by using 287 high red shift ($ .3 leq z leq 1.4$ ) SN Ia data of observed absolute magnitude along with their possible error from Union 2.1 comp
It was found recently that the anisotropies in the homogeneous Bianchi I cosmology considered within the context of a specific Horndeski theory are damped near the initial singularity instead of being amplified. In this work we extend the analysis of
In this paper, aniostropic dark energy cosmological models have been constructed in a Bianchi-V space-time with the energy momentum tensor consisting of two non-interacting fluids namely bulk viscous fluid and dark energy fluid. Two different models
Some cosmological solutions of massive strings are obtained in Bianchi I space-time following the techniques used by Letelier and Stachel. A class of solutions corresponds to string cosmology associated with/without a magnetic field and the other cla
We investigate FRW cosmological solutions in the theory of modulus field coupled to gravity through a Gauss-Bonnet term. The explicit analytical forms of nonsingular asymptotics are presented for power-law and exponentially steep modulus coupling fun