PyAutoLens: Open-Source Strong Gravitational Lensing
2021
Strong gravitational lensing, which can make a background source galaxy appears multiple
times due to its light rays being deflected by the mass of one or more foreground lens galaxies,
provides astronomers with a powerful tool to study dark matter, cosmology and the most
distant Universe. PyAutoLens is an open-source Python 3.6+ package for strong gravitational
lensing, with core features including fully automated strong lens modeling of galaxies and
galaxy clusters, support for direct imaging and interferometer datasets and comprehensive
tools for simulating samples of strong lenses. The API allows users to perform ray-tracing by
using analytic light and mass profiles to build strong lens systems. Accompanying PyAutoLens
is the autolens workspace, which includes example scripts, lens datasets and the HowToLens
lectures in Jupyter notebook format which introduce non-experts to strong lensing using
PyAutoLens. Readers can try PyAutoLens right now by going to the introduction Jupyter
notebook on Binder or checkout the readthedocs for a complete overview of PyAutoLens’s features.
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