Vol 24, No 6

Dynamical Dark Energy in Light of Cosmic Distance Measurements. II. A Study Using Current Observations

Xiaoma Wang, Gan Gu, Xiaoyong Mu, Shuo Yuan and Gong-Bo Zhao


We extract key information on dark energy from current observations of BAO, OHD and H0, and find hints of dynamical behavior of dark energy. In particular, a dynamical dark energy model whose equation of state crosses −1 is favored by observations. We also find that the Universe has started accelerating at a lower redshift than expected.


Key words: Cosmology – (cosmology:) dark energy – cosmology: observations

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