Cosmological constrains on new generalized Chaplygin gas model
  We use different combinations of data samples to investigate the new
generalized Chaplygin gas (NGCG) model in the context of dark energy (DE)
cosmology. Using the available cosmological data, we put constraints on the the
free parameters of NGCG model based on the statistical Markov chain Monte Carlo
method. We then find the best fit values of cosmological parameters and those
confidence regions in NGCG cosmology. Our result for the matter density
parameter calculated in NGCG model is in excellent agreement with that of the
standard CDM cosmology. We also find that the equation of state of DE of the
model slightly favors the phantom regime. We show that the big tension between
the low- and high-redshift observations appearing in CDM universe to predict
the Hubble constant H 0 can be alleviated in NGCG model. However, from the
statistical point of view, our results show that the standard CDM model fits
the observations better than the NGCG cosmology.
