Abstract

We reconstruct the dark energy equation of state by analyzing 5 sets of SNe Iadata along with Baryon Acoustic Oscillation (BAO) and Observational Hubble Data (OHD). A closed form parametrization of the luminosity distance in terms of redshift is assumed for the χ2 analysis of the observational data. A strong dependence of dark energy equation of state on the matter density in the present and earlier epoch is obtained and the lower limit of matter density parameter at an earlier epoch for a flat FRW universe has been predicted. The variation of dark energy density parameter and the matter density parameter are also obtained.

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