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Author

Tian-Qing Zhang

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Review Oct 2026

Extending SOMPZ beyond Spectroscopic Coverage for Roman Weak Lensing

Precision weak lensing cosmology requires accurate galaxy redshift distributions. However, the spectroscopic samples used to characterize these distributions do not fully span the magnitude--color--redshift space of weak lensing source galaxies, necessitating extrapolation. This challenge will be critical at the depth...

Yu-Fei Zhen, C. To, B. Yin et al. · 0 citations
Review Oct 2026

Weak-Lensing Shear Response for Photometric Redshift-Based Tomographic Binning

Dividing source galaxies into tomographic redshift bins is a cornerstone of modern weak gravitational lensing analyses, enabling measurements of the growth of cosmic structure and the nature of dark energy. In practice, these tomographic bins are defined using photometric redshift (photo-$z$) estimates. However, correl...

Xiang-Chong Li, Tian-Qing Zhang, R. Mandelbaum et al. · 0 citations

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