Disturbance-Load Analysis of Galaxy Rotation Curves in the Universal Halo Stress Theory Framework

This repository contains the research package accompanying the Disturbance-Load analysis of galaxy rotation curves within the Universal Halo Stress Theory (UHST) framework. The study investigates the predictive behaviour of UHST in comparison with Modified Newtonian Dynamics (MOND) using the SPARC galaxy rotation curve database. While MOND remains globally competitive across the SPARC sample, a subset of galaxies exists in which UHST provides significantly improved fits. To investigate this anomaly, a targeted literature audit was performed for two extreme subsets of galaxies: those where UHST strongly outperforms MOND and a control group where MOND performs best. Each galaxy was assigned a disturbance score (0–6) based on three observational indicators derived from astronomical literature: • outer disk warps • kinematic or morphological disturbances • environmental interactions The results show that galaxies in which UHST outperforms MOND exhibit systematically higher disturbance levels. Mean disturbance score:UHST-best galaxies ≈ 2.8 MOND-best galaxies ≈ 1.3 This pattern motivates the Disturbance-Load Hypothesis, which proposes that the relative performance of dynamical models may depend on the dynamical state of galactic disks. In dynamically disturbed systems the mapping between baryonic mass distribution and circular velocity becomes more uncertain. In such environments models that rely on global potential structures may behave differently than models based on local baryonic acceleration relations. The repository provides a reproducible research package containing: • manuscript drafts of the analysis • disturbance scoring tables • analysis scripts • reproducibility notebook • figures used in the study This dataset accompanies the broader UHST v18 framework and is intended to facilitate transparent inspection and further investigation of the Disturbance-Load hypothesis using the SPARC database.