lenstronomy II: A gravitational lensing software ecosystem

Understand

lenstronomy is an Astropy-affiliated Python package for gravitational lensing simulations and analyses.

• lenstronomy was introduced by Birrer and Amara (2018) and is based on the linear basis set approach by Birrer et a.
• (2015).
• The user and developer base of lenstronomy has substantially grown since then, and the software has become an integral part of a wide range of recent analyses, such as measuring the Hubble constant with time-delay strong lensing or constraining the nature of dark matter from resolved and unresolved small scale lensing distortion statistics.