Dec 11 – 15, 2023
Tsung-Dao Lee Institute
Asia/Shanghai timezone

Towards precision cosmology ---- systematics removal with Stage III data

Dec 15, 2023, 11:55 AM
Hall # 8

Hall # 8

Contributed talk in mini symposium Gravitational Lensing


Ji Yao (Shanghai Astronomical Observatory)


Precision cosmology is a very important target for the coming Stage IV weak lensing studies. It is also hard to achieve due to multiple systematical errors. In this talk, we present systematics mitigation performed in 2 published papers and some ongoing works. More specifically, we present intrinsic alignment mitigation with KiDS data, and shear bias removal as well as redshift error measurements with DECaLS data and Obiwan image simulation. With the experience of the calibrations with current Stage III data, we forecast the requirements for CSST systematics control, which will guide our calibration process in the future.

Primary author

Ji Yao (Shanghai Astronomical Observatory)


Prof. Huanyuan Shan (Shanghai Astronomical Observatory) Prof. Pengjie Zhang (Shanghai Jiao-Tong University)

Presentation materials