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Fig. 3.

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Example image comparison between NFWp and NFWm ellipticity parameterizations (top), with resulting residuals from the PEMD+shear fits (bottom). Caustics for both parameterizations are shown in the bottom right with the source position rescaled as described in the text and indicated as a cross. This example image comes from a system with moderately large ellipticity with an input axis ratio of qκ = 0.64.

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