Poisson Maximum Likelihood Estimation Toolkit for Solar Orbiter SWA-PAS Velocity Distribution Functions

This software provides a Python implementation of Poisson Maximum Likelihood Estimation fitting for proton velocity distribution functions measured by the Solar Orbiter SWA-PAS instrument. It implements a hierarchical fitting framework for separating the proton core and beam populations. This archived version is a record of the fitting code used to determine the proton core and beam bulk properties in the accompanying Astrophysical Journal (ApJ) manuscript 'Solar Orbiter Observations of Proton Core and Beam Populations: Evolution, Relative Drifts, and Heating Rates'. Details on how to use this repository are can be found in the provided README file.