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Can Third- and Fourth-order Multipoles plus Radial Variation of Isodensity Ellipses Explain the Observed Flux Ratios in B1422+231? YES, and a Lesson Learned from a TNG100 Lensing Galaxy Sample

  • Authors: Ruizhe Feng, Dandan Xu, Dominique Sluse, Giulia Despali, Anowar J. Shajib, Cai-Na Hao

Ruizhe Feng et al 2026 The Astrophysical Journal 1012 .

  • Provider: AAS Journals

Caption: Figure 13.

The critical curves and caustics together with the image and source positions predicted by one of the best-fit models in EPL+γ+m3+m4+PAv+Qv (assuming σf = 2% and σp = 10 mas). The best model parameters are also marked out by the vertical lines in Figure 12. The observed image positions for B1422 are also given (circles).

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