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
Ruizhe Feng, Dandan Xu, Dominique Sluse, Giulia Despali, Anowar Shajib, Cai-Na Hao
astro-ph.GA, astro-ph.CO
Submitted: 2026-07-13
Comments: 18 pages, 10 figures, 4 tables, submitted to ApJ. Comments are welcome!
Code: https://github.com/asterg1122/B1422
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Terminology
Sources
- JWST lensed quasar dark matter survey IV: Stringent warm dark matter constraints from the joint reconstruction of extended lensed arcs and quasar flux ratios
- Flux-ratio anomalies in cusp quasars reveal dark matter beyond CDM
- JWST Lensed Quasar Dark Matter Survey III: Dark Matter Sensitive Flux Ratios and Warm Dark Matter Constraint from the Full Sample
- Computational Methods for Gravitational Lensing
- A gravitational lens model for B1422+231
- Measurement of the minimum cold dark matter halo mass with strong gravitational lensing
- A toolbox for general elliptical gravitational lenses
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