Image Details
Caption: Figure 1.
Left: ZTF gr image of the field before the transient (bottom) and NOT gri image during the peak of the lightcurve (top). Right: NIRCam F150W, F200W, and F277W images, alongside the NIRSpec G140M white light image (top), and subtractions after modeling the lensing galaxy, G, and image A (bottom). Note the inset showing that image A is well modeled as two PSFs separated by ∼0﹩\mathop{.}\limits{^{\prime\prime} }﹩07. The F277W and G140M residuals show an arc to the south west of the galaxy, as well as a hint of another image, which we label C.
© 2026. The Author(s). Published by the American Astronomical Society.