2 papers
astro-ph.CO2026
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…
astro-ph.CO2025
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…