216 citations · 1.2k across the 17 of their papers we have counts for
14 papers · 1 filter
Growth factor parametrization and modified gravity
Yungui Gong
The growth rate of matter perturbation and the expansion rate of the Universe can be used to distinguish modified gravity and dark energy models in explaining the cosmic accelerati…
Dark energy and cosmic curvature: Monte-Carlo Markov Chain approach
Yungui Gong, Qiang Wu, Anzhong Wang
We use the Monte-Carlo Markov Chain method to explore the dark energy property and the cosmic curvature by fitting two popular dark energy parameterizations to the observational da…
Testing the viability of the interacting holographic dark energy model by using combined observational constraints
Chang Feng, Bin Wang, Yungui Gong +1
Using the data coming from the new 182 Gold type Ia supernova samples, the shift parameter of the Cosmic Microwave Background given by the three-year Wilkinson Microwave Anisotropy…
Energy conditions and current acceleration of the universe
Yungui Gong, Anzhong Wang
The energy conditions provide a very promising model-independent study of the current acceleration of the universe. However, in order to connect these conditions with observations,…
Direct evidence of acceleration from distance modulus redshift graph
Yungui Gong, Anzhong Wang, Qiang Wu +1
The energy conditions give upper bounds on the luminosity distance. We apply these upper bounds to the 192 essence supernova Ia data to show that the Universe had experienced accel…
Reconstruction of the deceleration parameter and the equation of state of dark energy
Yungui Gong, Anzhong Wang
The new 182 gold supernova Ia data, the baryon acoustic oscillation measurement and the shift parameter determined from the Sloan Digital Sky Survey and the three-year Wilkinson Mi…