Welcome to our challenge to detect and quantify line-of-sight structures and substructure in galaxy-galaxy strong lenses!
The challenge is divided into four levels of increasing difficulty, complexity, and/or realism from level 0 (simple source, simple main lens mass, single substructure, simple instrument without noise, all parameters known) to level 3 (complex source, complex main lens, multiple l.o.s. structures and substructures, realistic instruments).
The challenge design is described in more detail here:
The simulated data for the first two levels (sorry radio data still missing) can be found here:
You can also clone or download the repository:
Please submit your results for the first two levels as described in the example submission files:
- a single file (per team and method) containing results for substructure paramaters of all systems
- for more detailed feedback, a file for each system containing results of source, main lens, and substructure parameters
To report any issues or to ask questions regarding the challenge, you may send an email to
updates:
- 2019-05-21: added convergence and deflection maps for lvl 0
- 2019-03-31: deadline for lvl 0 and lvl1 will be extended (details will follow soon)
- 2019-02-11: added psf images
- 2019-01-16: lvl 0 and lvl 1 optical data going public