130 citations · 1.1k across the 52 of their papers we have counts for
4 papers · 1 filter
Information Content in the Angular Power Spectrum of Weak Lensing: Wavelet Method
Hao-Ran Yu, Joachim Harnois-Déraps, Tong-Jie Zhang +1
We quantify the performance of a non-linear Wiener filter, constructed in wavelet space, at recovering some of the Fisher information that was lost in the weak lensing convergence…
Constraints on smoothness parameter and dark energy using observational data
Hao-Ran Yu, Tian Lan, Hao-Yi Wan +2
The universe, with large-scale homogeneity, is locally inhomogeneous, clustering into stars, galaxies and larger structures. Such property is described by the smoothness parameter…
Increasing the Fisher Information Content in the Matter Power Spectrum by Non-linear Wavelet Weiner Filtering
Tong-Jie Zhang, Hao-Ran Yu, Joachim Harnois-Déraps +2
We develop a purely mathematical tool to recover some of the information lost in the non-linear collapse of large-scale structure. From a set of 141 simulations of dark matter dens…
Statefinder diagnosis for the Palatini gravity theories
Song Li, Hao-Ran Yu, Tong-Jie Zhang
The Palatini gravity, is able to probably explain the late time cosmic acceleration without the need for dark energy, is studied. In this paper, we investigate a number of $…