Roman Strong Lens Data Challenge

This repository houses the website and supporting code for the Roman Strong Lens Data Challenge.

Overview

The Roman Space Telescope is expected to observe $\mathcal{O}(10^5)$ galaxy-galaxy strong gravitational lenses, providing high angular resolution images of galaxy-galaxy strong gravitational lenses that can be used to probe the nature of dark matter at sub-galactic scales (Daylan and Birrer 2023, Wedig et al. 2025). The Roman Data Challenge for Dark Matter Substructure with Galaxy-Galaxy Strong Gravitational Lenses provides realistic simulated Roman images of strong lenses with various dark matter substructure populations and challenges the community to test out substructure detection and characterization pipelines.

Acknowledgment

This research was supported by the National Aeronautics and Space Administration (NASA) under grant number 80NSSC24K0095 issued by the Astrophysics Division of the Science Mission Directorate (SMD) and the McDonnell Center for the Space Sciences at Washington University in St. Louis.