Hubble Frontier Field free-form mass mapping of the massive multiple-merging cluster MACSJ0717. 5+ 3745 Academic Article uri icon

abstract

  • Abstract We examine the latest data on the cluster MACSJ0717. 5+ 3745 from the Hubble Frontier Fields campaign. The critically lensed area is the largest known of any lens and very irregular making it a challenge for parametric modelling. Using our free-form method we obtain an accurate solution, identify here many new sets of multiple images, doubling the number of constraints and improving the reconstruction of the dark matter distribution. Our reconstructed mass map shows several distinct central substructures with shallow density …

publication date

  • June 29, 2015