Dark energy constraints from the cosmic age and supernova

  title={Dark energy constraints from the cosmic age and supernova},
  author={Bo Feng and Xiulian Wang and Xinmin Zhang},
  journal={Physics Letters B},
Using the low limit of cosmic ages from globular cluster and the white dwarfs: t(0) > 12 Gyr, together with recent new high redshift supernova observations from the HST/GOODS program and previous supernova data, we give a considerable estimation of the equation of state for dark energy, with uniform priors as weak as 0.2 < Omega(m) < 0.4 or 0.1 < Omega(m)h(2) < 0.16. We find cosmic age limit plays a significant role in lowering the upper bound on the variation amplitude of dark energy equation… Expand
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