Third- and fourth-order multipoles plus radial iso-density variations extracted from TNG100 can fully explain B1422+231 positions and flux ratios under realistic uncertainties, without clumpy substructure.
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Can third- and fourth-order multipoles plus radial variation of iso-density ellipses explain the observed flux ratios in B1422$+$231? YES, and a lesson learned from a TNG100 lensing galaxy sample
Third- and fourth-order multipoles plus radial iso-density variations extracted from TNG100 can fully explain B1422+231 positions and flux ratios under realistic uncertainties, without clumpy substructure.