Results from the ALMA and VLA lens models (see Table B.2). Images are normalized to the peak intensity and smoothed to the beam (shown in bottom-left corner) given hereafter. (a) ALMA model with two point-like sources, smoothed to a resolution of 30 mas. Contour levels at 0.5, 0.01, and 0.0005. (b) VLA model, with one point-like and one extended source, smoothed to the same beam as the VLA-15 GHz observations by Subrahmanyan et al. (1990): 161 × 117 mas², with a position angle of 26°. Contour levels every 1/2ⁿ, with n = 1 to 10. In our simulations, a thin jet would follow an arclet feature between images B and C, as indicated by the dashed curve. Right: VLA-15 GHz observations by Subrahmanyan et al. (1990). We note that their labels of the different features are not the same as ours: in this image, labels C and D mark the extensions from images A and B, and label E corresponds to the third image.