What question did this study set out to answer?

The aim is to evaluate rotation curves of galaxies using a method that excludes dark halos.

June 17, 2026Open Access

CDN-228: Rotation Curves Without Halos

Key Points

The aim is to evaluate rotation curves of galaxies using a method that excludes dark halos.
Trained on half of quality-1/2 galaxies using a baryon-tethered fixed response kernel.
Tested performance on held-out galaxy data without including per-galaxy dark halos.
Measured RMS fractional velocity error pre- and post-intervention.
RMS fractional velocity error improved from 0.437 for baryons alone to 0.235 for the fixed response kernel.
Fitted global scale found to be g_dagger = 1.141e-10 m/s^2.

Abstract

CDN-228 tests the first gate of the GCFT dark-matter-resolution arc using public SPARC rotation-curve mass models. A single baryon-tethered fixed response kernel is trained on half of the quality-1/2 galaxies and tested on the held-out half, with no per-galaxy dark halos. The fitted global scale is gdagger = 1. 141e-10 m/s². Held-out RMS fractional velocity error improves from 0. 437 for baryons alone to 0. 235 for the fixed response. The paper explicitly limits the result: this is rotation-support evidence, not a final GCFT derivation and not a lensing, cluster, growth, or CMB solution.

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