Coffee talks
Friday 13/11/2026 @ 11:30, IRA Seminar Room Fourth floor + Remote meet.google.com/sue-bwvk-axf
Wolfgang Enzi (INAF-IRA), “Making Sense of Complex Lenses: From Galaxy Structure to Dark Matter”
Strong gravitational lensing provides a powerful tool to study the distribution of matter in galaxies, from stellar populations to dark matter substructures. I will briefly introduce my previous research on dark matter, cosmology, and lens modelling, before focusing on two recent systems. The first is a face-on spiral lens discovered with Euclid, where we disentangle the different mass components to constrain stellar mass-to-light ratios. The second is a JWST observation of a strongly lensed spiral galaxy, whose resolved structure allows us to search for dark matter substructure through gravitational imaging. Together, these systems highlight the opportunities and challenges of modelling complex gravitational lenses.