{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/lenstronomy-ii-a-gravitational-lensing","title":"lenstronomy II: A gravitational lensing software ecosystem","arxiv_id":"2106.05976","date":"2021-06-10","proceeding":null,"authors":["Simon Birrer","Anowar J. Shajib","Daniel Gilman","Aymeric Galan","Jelle Aalbers","Martin Millon","Robert Morgan","Giulia Pagano","Ji Won Park","Luca Teodori","Nicolas Tessore","Madison Ueland","Lyne Van de Vyvere","Sebastian Wagner-Carena","Ewoud Wempe","Lilan Yang","Xuheng Ding","Thomas Schmidt","Dominique Sluse","Ming Zhang","Adam Amara"],"abstract":"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. 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