3 papers
astro-ph.CO2026
First Observational Evidence for Split Infall Flow of Cosmic Filaments into Clusters
Ji Yao, Huanyuan Shan, Pengjie Zhang +5
Velocity fields in the cosmic web are fundamental to structure formation but remain difficult to observe directly beyond the linear regime. Here we present observational evidence t…
astro-ph.CO2025
Meta-Calibration of the Cosmic Magnification Coefficient: Toward Unbiased Weak Lensing Reconstruction by Counting Galaxies
Jian Qin, Pengjie Zhang, Zhu Chen +6
Weak lensing alters galaxy sizes and fluxes, influencing the clustering patterns of galaxies through cosmic magnification. This effect enables the reconstruction of weak lensing co…
astro-ph.CO2024
Optimizing Redshift Distribution Inference through Joint Self-Calibration and Clustering-Redshift Synergy
Weilun Zheng, Kwan Chuen Chan, Haojie Xu +2
Accurately characterizing the true redshift (true-) distribution of a photometric redshift (photo-) sample is critical for cosmological analyses in imaging surveys. Clusterin…