What question did this study set out to answer?

This research aims to validate weak-lensing mass estimates by comparing them with X-ray and SZ survey data.

June 18, 2026Open Access

CDN-254: The Lensing Cross-Check

Key Points

This research aims to validate weak-lensing mass estimates by comparing them with X-ray and SZ survey data.
Cross-matched 25 clusters from four weak-lensing sources against four X-ray and SZ survey catalogs.
Analyzed 45 dual-mass pairs for coherence and bias correlations.
Utilized the CDN-242 seven-term proxy to absorb channel systematics.
95.6% of dual-mass pairs remained consistent across both the weak-lensing and X-ray/SZ channels.
Observed a bias–κ anti-correlation of r = −0.54 between thermodynamic and gravitational measurements.
The CDN-242 proxy reduced mass-channel systematics by 20-40%.

Abstract

Cross-matches 25 clusters with published weak-lensing masses (CLASH, LoCuSS, WtG, CCCP) against four X-ray/SZ survey catalogs (SPT-SZ, ACT DR5, Planck PSZ2, eROSITA). 95.6% of 45 dual-mass pairs remain in-band from both channels. Bias–κ anti-correlation r = −0.54: coherence field couples asymmetrically to thermodynamic vs gravitational probes. Locked CDN-242 seven-term proxy absorbs 20–40% mass-channel systematics through its feature vector. Part of the GCFT dark-sector cluster arc.

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