Fengquan Wu

Constraints on holographic dark energy from type Ia supernova observations

In this paper, we use the type Ia supernovae data to constrain the holographic dark energy model proposed by Li. We also apply a cosmic age test to this analysis. We consider in this paper a spatially flat Friedmann-Robertson-Walker universe with a matter component and a holographic dark energy component. The fit result shows that the case

Holographic dark energy model from Ricci scalar curvature

cl1

Constraints on holographic dark energy from the latest supernovae, galaxy clustering, and cosmic microwave background anisotropy observations

(

Constraints on holographic dark energy from X-ray gas mass fraction of galaxy clusters

c=0.21

Constraints on the Brans-Dicke gravity theory with the Planck data

) is favored, which implies that the holographic dark energy behaves as a quintom-type dark energy. Furthermore, we also perform a joint analysis of

Noncommutative chaotic inflation and WMAP three year results

\mathrm{SNe}+\mathrm{CMB}+\mathrm{LSS}

Cosmological constraint on Brans-Dicke Model

to this model; the result is well improved and still upholds the quintom dark energy conclusion. The best fit results in our analysis are

Sky reconstruction from transit visibilities: PAON-4 and Tianlai dish array

c=0.81

The radio core and jet in the broad absorption-line quasar PG 1700+518

,

Cosmic microwave background with Brans-Dicke gravity. I. Covariant formulation

{\ensuremath{\Omega}}_{m}^{0}=0.28