4 papers
DIVERSE: Disagreement-Inducing Vector Evolution for Rashomon Set Exploration
Gilles Eerlings, Brent Zoomers, Jori Liesenborgs +2
We propose DIVERSE, a framework for systematically exploring the Rashomon set of deep neural networks, the collection of models that match a reference model's accuracy while differ…
Testing Light Unaffiliated Mass Clumps in MACS 0416 on galaxy and galaxy cluster scales using JWST
Marceau Limousin, Derek Perera, Gregor Rihtarsic +2
Light unaffiliated mass clumps (LUMCs), i.e. dark matter (DM) components without any stellar counterparts, have been reported in strong lensing mass reconstructions of MACS 0416, b…
Are Models of Strong Gravitational Lensing by Clusters Converging or Diverging?
Derek Perera, John H Miller, Liliya L. R. Williams +4
The increasingly large numbers of multiple images in cluster-scale gravitational lenses have allowed for tighter constraints on the mass distributions of these systems. Most lens m…
BUFFALO Wild Wings: A High Precision Free-Form Lens Model of MACSJ0416 with Constraints on Dark Matter from Substructure and Highly Magnified Arcs
Derek Perera, Liliya L. R. Williams, Jori Liesenborgs +10
We present new free-form and hybrid mass reconstructions of the galaxy cluster lens MACS J0416.12403 at using the lens inversion method GRALE. The reconstructions use…