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Auto-differentiable line-by-line spectral modeling of exoplanets/brown dwarfs using JAX.

Project description

ExoJAX

License Docs arxiv arxiv paper

Differentiable spectral modelling of exoplanets/brown dwarfs/M dwarfs using JAX! Read the docs 🐕.

In short, ExoJAX allows you to do gradient based optimizations, HMC-NUTS, and SVI using the latest database.

ExoJAX Classes
  • Databases: *db (mdb: molecular, adb: atomic, cdb: continuum, pdb: particulates)
  • Opacity Calculators: opa (Voigt profile, CIA, Mie, Rayleigh scattering etc)
  • Atmospheric Radiative Transfer: art (emission w, w/o scattering, reflection, transmission)
  • Spectral Operator: sop (planet rotation, instrumental broadening, photometry)
  • Atmospheric Microphysics: amp (clouds etc)

License

🐈 Copyright 2020-2025 ExoJAX contributors. ExoJAX is publicly available under the MIT license.

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