Constraining the dark-energy equation of state with cosmological data

Recently, the observed equation of state for dark energy appears to favor values below $\ensuremath{-}1$. The tendency implies that nature may be quite different from cosmological constant. In view adjustment on keeps decreasing, introduction phantom seems inevitable. By employing observational constraints supernovae and acoustic scale in which accuracy data has become extraordinary, we apply a phenomenological scenario acquainted with evolution our universe. demonstration constrained unfolding shows model high consistency current observation.