Image Details
Caption: Figure 4.
Best-fit elliptical power law with external shear mass model for SN 2025mkn, with predicted image positions as open red circles. The model recovers the observed positions (red dots) of A1, A2, and B, but also predicts a fourth image, C. The source lies close to the astroid caustic (purple), and the high-magnification images of A straddle the critical curve (dark blue).
© 2026. The Author(s). Published by the American Astronomical Society.