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July 14, 20260 citationsOpen Access

Statistical superiority of a two-parameter fast-saturation model in fitting SPARC galaxy rotation curves: a comparison with 𝛬CDM and MOND

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文徐文喜 徐

Key Points

  • The study aims to identify the most statistically optimal model for fitting galaxy rotation curves from a dataset of 175 disc galaxies.
  • Compared six two-parameter coherent inflow functions under Fluid Space Theory with standard dark matter models.
  • Utilized Bayesian Information Criterion, cross-validation, and various resampling techniques for analysis.
  • Gathered data from the SPARC rotation curve catalogue, applying uniform fitting pipelines across all models.
  • The RAT_S function was identified as the statistically optimal candidate with the best BIC values.
  • Demonstrated significant improvement in BIC statistics over bbCDM and MOND models across samples.
  • Statistically quantified robustness of fitting results using jackknife and bootstrap methods.

Abstract

This archive contains all supporting fitting datasets, analysis scripts, and numerical outputs to reproduce every statistical result, table and figure presented in the manuscript titled Statistical superiority of a two-parameter fast-saturation model in fitting SPARC galaxy rotation curves: a comparison with \ (\) CDM and MOND. The study performs systematic phenomenological comparisons of six two-parameter coherent inflow functions under Fluid Space Theory (FST), alongside standard \ (\) CDM cored NFW halo models and fixed-\ (a₀\) MOND, using the SPARC sample of 175 disc galaxies. The rational fast-saturation function RATS is identified as the statistically optimal candidate via Bayesian Information Criterion (BIC), cross-validation, jackknife leave-one-out tests, bootstrap resampling, stratified subsample analysis and parameter boundary robustness checks. Data all figure placeholders, tables and statistical conclusions rely entirely on the numerical outputs contained within this archive. SPARC original observational data can be accessed at http: //astroweb. cwru. edu/SPARC/.

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Cite This Study

文喜 徐 (2026) studied this question.

synapsesocial.com/papers/6a55d18e5aafca87247f88a4https://doi.org/10.5281/zenodo.21315996
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