The presence of the dark energy allows both the acceleration and the expansion\nof the universe. In the case of a constant equation of state for dark energy\nwe derived an analytical solution for the Hubble radius in terms of the\nhypergeometric function. An approximate Taylor expansion of order seven is\nderived for both the constant and the variable equation of state for dark\nenergy. In the case of the Cardassian cosmology, we also derived an analytical\nsolution for the Hubble radius in terms of the hypergeometric function. The\nastronomical samples of the distance modulus for Supernova (SN) of type Ia\nallows the derivation of the involved cosmological in the case of constant equation\nof state, variable equation of state and Cardassian cosmology.
Loading....