4 papers
Free-form Grale reconstruction of Abell 2744: robustness of uncertainties against changes in lensing data
Kevin Sebesta, Liliya L. R. Williams, Jori Liesenborgs +2
Abell 2744, a massive Hubble Frontier Fields merging galaxy cluster with many multiple images in the core has been the subject of many lens inversions using different methods. Whil…
Evidence for the line of sight structure in the largest Hubble Frontier Field cluster, MACSJ0717.5+3745
Liliya L. R. Williams, Kevin Sebesta, Jori Liesenborgs
MACS J0717 is the most massive and extended of the Hubble Frontier Field clusters. It is one of the more difficult clusters to model, and we argue that this is in part due to the l…
The Frontier Fields Lens Modeling Comparison Project
M. Meneghetti, P. Natarajan, D. Coe +20
Gravitational lensing by clusters of galaxies offers a powerful probe of their structure and mass distribution. Deriving a lens magnification map for a galaxy cluster is a classic…
Testing light-traces-mass in Hubble Frontier Fields Cluster MACS-J0416.1-2403
Kevin Sebesta, Liliya L. R. Williams, Irshad Mohammed +2
We reconstruct the projected mass distribution of a massive merging Hubble Frontier Fields cluster MACSJ0416 using the genetic algorithm based free-form technique called Grale. The…