Exotic image formation in strong gravitational lensing by clusters of galaxies – II. Uncertainties

Due to the finite amount of observational data, best-fit parameters corresponding reconstructed cluster mass have uncertainties. In turn, these uncertainties affect inferences made from models. Following our earlier work, we studied effect such on singularity maps in simulated and actual galaxy clusters. The models for both real clusters been constructed using grale. final created grale give simplest a lower limit number point singularities that lens has offer. simple nature also puts three image (tangential radial) arcs has. Hence, estimate sources giving rise arcs, which can be observed with James Webb Space Telescope (JWST). We find expect observe at least 20-30 tangential 5-10 radial three-image Hubble Frontier Fields lenses JWST.