A versatile tool for cluster lensing source reconstruction. I. methodology and illustration on sources in the Hubble Frontier Field Cluster MACS J0717.5+3745

2 code implementations • 21 Jan 2020 • Lilan Yang, Simon Birrer, Tommaso Treu

For multiply-imaged sources, the tool can also fit and apply first (deflection) second (shear, convergence) and third order (flexion) corrections to the local gravitational potential to improve the overall reconstruction, depending on the quality of the data.

Astrophysics of Galaxies Instrumentation and Methods for Astrophysics