Resumen:

With new ultra-deep JWST data, we revisited the complex merging cluster Abell2744 (z=0.308), also known as the Pandora Cluster, by doing an in-detail weak-gravitational lensing analysis. By using public data from the Uncover project we measured shapes of background galaxies with an unprecedented number density over 200 per sq. arcmin. All sources with reliable photometric redshifts z>1.0. We modelled the cluster's mass distribution by fitting several substructures using NFW profiles. Our findings confirmed the presence of multiple substructures and the large overall cluster mass. These data were used to feed tailor-made numerical simulations that give us insights into the merging scenarios that could have produces the current, state of this cluster, including the dissociation between the gas and the other cluster structures.