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GlobalSplineFit

Cosmic ray flux parametrizations with uncertainty quantification

GlobalSplineFit (GSF) is a Python package that provides precise parametrizations of cosmic ray flux and composition based on spline fits to experimental data. The package offers specialized model classes optimized for different input parameters and use cases.

  • GSF Explorer

    Explore the model interactively in your browser — fluxes, composition, uncertainties, data export. No installation needed.

    Open the Explorer

  • Tutorials

    Interactive notebooks running in your browser — editable, and downloadable to run locally.

    Tutorial gallery

  • User Guide

    Model classes, versions, particle groups, solar modulation, and uncertainty quantification.

    User Guide

  • API Reference

    Detailed descriptions of classes, methods, and parameters.

    API Reference

Using GSF as a dependency in your own code, or running the notebooks and the Explorer locally? See Getting Started.

Citation

If you use GlobalSplineFit in your research, please cite:

@article{gsf2025,
  title={GlobalSplineFit: Modern Python package for cosmic ray flux parametrizations},
  author={Dembinski, Hans and Fedynitch, Anatoli},
  journal={Astrophys. J.},
  year={2025},
  note={In preparation}
}

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