Image Details
Caption: Figure 3.
Reanalyzing the HST image using the ALMA-based lensing model. Left: the ACS/WFC F782N image, which was used to build the lensing model in X. Fan et al. (2019). Middle: the best-fit image using the ALMA-based lensing model. The red lines mark the lensing caustics, and the cyan crosses mark the lensed images of the optical quasar. Right: the residual image. The yellow ellipse shows the position and shape (i.e., position angle and ellipticity) of the SIE, which agrees well with the foreground galaxy emission in the HST image. The updated model indicates a total magnification of 37.1 for the optical quasar.
© 2026. The Author(s). Published by the American Astronomical Society.