Harmonica

Harmonica is a python package for computing transit light curves of irregularly-shaped occultors. The primary utility of this code is for mapping exoplanet atmospheres around their terminators, however the technique can be applied to any transit light curve to derive the shape of the transiting body. Be sure to have a quick read through of how the shapes, referred to as transmission strings, are defined before you get going.

Contents

• Installation
• Transmission strings
• Quick start
• Tutorials
  • Generate a light curve
  • Maximum likelihood estimation of a transmission string
  • Basic inference of a transmission string
  • Gradient-based inference of a transmission string
  • Assessing model evidence
  • Calculate Fourier parameters from shape data
  • Time-dependent shapes
• API
  • Primary Interface
  • Subpackages
• Citation

Acknowledgements

Built by David Grant, Hannah Wakeford, and contributors. We are very happy to collaborate if you want to reach out.

If you make use of Harmonica in your research, see the citation page for info on how to cite this package. You can find other software from the Exoplanet Timeseries Characterisation (ExoTiC) ecosystem over on GitHub.