Radial-Time Accumulation as a Contribution to the Observed Gravitational Excess in Galaxy Rotation Curves

This repository contains the manuscript, analysis scripts, and reproducibility materials for a pilot study of radial-time accumulation as a possible contribution to the observed gravitational excess in galaxy rotation curves. Using SPARC rotation-curve data, the model adds a cumulative radial-history term derived from the baryonic velocity contribution and fits galaxy rotation profiles with bounded mass-to-light ratios and a fitted accumulation parameter, λ. The included scripts reproduce the main SPARC fitting workflow, radial acceleration relation diagnostics, λ-distribution summaries, fixed-λ comparison plots, and Solar-System-scale consistency estimates. These materials are intended to support transparent review of the model formulation, numerical implementation, generated figures, and tabulated outputs, rather than to present the framework as an established replacement for dark matter or modified gravity.