Abstract: LensPerfect is a new approach to the massmap reconstruction of strong gravitational lenses. Conventional methods iterate over possible lens models which reproduce the observed multiple image positions well but not exactly. LensPerfect only produces solutions which fit all of the data exactly. Magnifications and shears of the multiple images can also be perfectly constrained to match observations.
Credit: Coe, D.; Fuselier, E.; Benitez, N.; Broadhurst, T.; Frye, B.; Ford, H.