Constraining Galaxy Cluster Triaxiality via Weak Lensing --- I. Preparation for the Rubin Data Beyond Leading Order

arXiv:2605.06587 · astro-ph.CO, astro-ph.GA · Submitted 2026-05-07 · Read on arXiv

astro-ph.CO, astro-ph.GA

Submitted: 2026-05-07

Updated: 2026-10-11

Code: https://github.com/oguri/glafic2

Terminology

• Weak Lensing — 3× in this paper · explained in 2 episodes
• Accuracy — 1× in this paper · explained in 1 episode
• Legacy Survey of Space and Time — 1× in this paper

Sources

• The Atacama Cosmology Telescope: DR6 Sunyaev-Zel'dovich Selected Galaxy Clusters Catalog
• Dark Energy Survey Year 3 Results: Cosmological Constraints from Cluster Abundances, Weak Lensing, and Galaxy Clustering
• Metacalibration: Direct Self-Calibration of Biases in Shear Measurement
• A Catalog of Mass Models for Gravitational Lensing
• LSST Science Book, Version 2.0
• Roman Observations Time Allocation Committee: Final Report and Recommendations
• Multipole analysis of cluster weak lensing shear in The Three Hundred project
• Weak Gravitational Lensing
• Brightest Cluster Galaxy ellipticity as proxy for halo shape: Orientation bias, assembly bias, and potential selection effects in SZ-selected clusters

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