A velocity-coupled radial acceleration ansatz fits 171 SPARC rotation curves comparably to NFW and Burkert halos while revealing strong parameter degeneracies.
S., Lelli, F., & Schombert, J
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Rotation-curve residuals organize into the linear relation v² - A/r = B + C r, with B suppressed in LITTLE THINGS dwarfs relative to the high-B branch in SPARC galaxies that scales as B ∝ M_bar^0.72.
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A Velocity Coupled Radial Acceleration Ansatz for Disk-Galaxy Rotation Curves: Fits to SPARC, Bayesian Inference, and Parameter Identifiability
A velocity-coupled radial acceleration ansatz fits 171 SPARC rotation curves comparably to NFW and Burkert halos while revealing strong parameter degeneracies.