216 citations · 1.2k across the 17 of their papers we have counts for
10 papers · 1 filter
The Holographic dark energy reexamined
Yungui Gong, Bin Wang, Yuan-Zhong Zhang
We have reexamined the holographic dark energy model by considering the spatial curvature. We have refined the model parameter and observed that the holographic dark energy model d…
Observational constraints on generalized Chaplygin gas model
Yungui Gong
The generalized Chaplygin gas model with parameter space is studied in this paper. Some reasonable physical constraints are added to justify the use of the larger parameter…
Probing the curvature of the Universe from supernova measurement
Bin Wang, Yungui Gong, Ru-Keng Su
We study the possibility to probe the spatial geometry of the Universe by supernova measurement of the cubic correction to the luminosity distance. We illustrate with an accelerati…
A new alternative model to dark energy
Yungui Gong, Xi-Ming Chen, Chang-Kui Duan
The recent observations of type Ia supernovae strongly support that the universe is accelerating now and decelerated in the recent past. This may be the evidence of the breakdown o…
Model independent analysis of dark energy I: Supernova fitting result
Yungui Gong
The nature of dark energy is a mystery to us. This paper uses the supernova data to explore the property of dark energy by some model independent methods. We first Talyor expanded…
Extended Holographic dark energy
Yungui Gong
The idea of relating the infrared and ultraviolet cutoffs is applied to Brans-Dicke theory of gravitation. We find that extended holographic dark energy from the Hubble scale or th…