7 papers
Onsite Calibration of the Shear-Shear Correlation
Cong Liu, Jun Zhang, Zhenjie Liu
Calibration of the cosmic shear bias is crucial for justifying the cosmological results. However, it is still unclear to what extent calibrations based on simulated galaxy images,…
Calibrating Self-Weighted Shear Estimation via Field Distortion
Zhenjie Liu, Jiarui Sun, Jun Zhang +1
Accurate cosmic shear measurement is the key to fully realize the scientific potential of large scale galaxy surveys. The Fourier\_Quad shear measurement method has been significan…
Constraining with Lensing Statistics in Low and High Density Regions
Yiqi Huang, Fuyu Dong, Jun Zhang +2
Lensing studies are typically carried out around high density regions, such as groups and clusters, where the lensing signals are significant and indicative of rich density structu…
Precision Measurement of Large Shear Signals
Jiarui Sun, Jun Zhang, Li Cui +2
So far, estimators of galaxy shape distortions are only carefully studied perturbatively in the case of small shear signals, mainly for weak lensing science. However, in the neighb…
Dependence of halo properties on central-satellite magnitude gaps through weak lensing measurements
Mingtao Yang, Jiaxin Han, Wenting Wang +9
The magnitude gap between the central and satellite galaxies encodes information about the mass accretion history of a dark matter halo, and serves as a useful observational probe…
The Dependence of Dark Matter Halo Properties on the Morphology of Their Central Galaxies from Weak Lensing
Zhenjie Liu, Kun Xu, Jun Zhang +2
Xu \& Jing reported a monotonic relationship between host halo mass and the morphology of massive central galaxies, characterized by the Sérsic index , at fixed stellar m…