Demonstrates a geometric relationship in lensing and dynamics, suggesting a unified interpretation.
Why do gravitational lensing and galactic dynamics disagree? This work shows that light and matter read two distinct projections of the same underlying geometry. We derive a fixed number before comparing to data: 19/15 ≈ 1.267. KiDS, GAMA and HSC catalogues measure 1.2706 ± 0.0287. The same factor improves lensing fits — and degrades dynamical fits. No fitting. No free parameters. Full reproducibility scripts and data are included.
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Alejandro Rey (2026) studied this question.
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