167 citations · 1.1k across the 43 of their papers we have counts for
5 papers · 1 filter
Removing the Impact of Correlated PSF Uncertainties in Weak Lensing
Tianhuan Lu, Jun Zhang, Fuyu Dong +5
Accurate reconstruction of the spatial distributions of the Point Spread Function (PSF) is crucial for high precision cosmic shear measurements. Nevertheless, current methods are n…
An accurate centroid algorithm for PSF reconstruction
Tianhuan Lu, Wentao Luo, Jun Zhang +8
In this work, we present a novel centroiding method based on Fourier space Phase Fitting(FPF) for Point Spread Function(PSF) reconstruction. We generate two sets of simulations to…
Galaxy-galaxy weak-lensing measurement from SDSS: II. host halo properties of galaxy groups
Wentao Luo, Xiaohu Yang, Tianhuan Lu +10
As the second paper of a series on studying galaxy-galaxy lensing signals using the Sloan Digital Sky Survey Data Release 7 (SDSS DR7), we present our measurement and modelling of…
Weak lensing power spectrum reconstruction by counting galaxies.-- I: the ABS method
Xinjuan Yang, Jun Zhang, Yu Yu +1
We propose an Analytical method of Blind Separation (ABS) of cosmic magnification from the intrinsic fluctuations of galaxy number density in the observed galaxy number density dis…
Signature of the interaction between dark sectors in the reionization process
Rui An, Xiaodong Xu, Jun Zhang +2
We consider the reionization process in a cosmological model in which dark matter interacts with dark energy. Using a semi-analytical reionization model, we compute the evolution o…