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Where is the matter in the Merging Cluster Abell 2218?
Árdís Elíasdóttir, Marceau Limousin, Johan Richard +6
We present a parametric strong lensing model of the cluster Abell 2218 based on HST ACS data. We constrain the lens model using 8 previously known multiply imaged systems, of which…
Probing the Slope of Cluster Mass Profile with Gravitational Einstein Rings: Application to Abell 1689
H. Tu, M. Limousin, B. Fort +5
The strong lensing modelling of gravitational ``rings'' formed around massive galaxies is sensitive to the amplitude of the external shear and convergence produced by nearby mass c…
A Bayesian approach to strong lensing modelling of galaxy clusters
Eric Jullo, Jean-Paul Kneib, Marceau Limousin +3
In this paper, we describe a procedure for modelling strong lensing galaxy clusters with parametric methods, and to rank models quantitatively using the Bayesian evidence. We use a…
A statistical study of multiply-imaged systems in the lensing cluster Abell 68
Johan Richard, Jean-Paul Kneib, Eric Jullo +8
We have carried out an extensive spectroscopic survey with the Keck and VLT telescopes, targeting lensed galaxies in the background of the massive cluster Abell 68. Spectroscopic m…