Speaker
Description
Strongly lensed supernovae are excellent, independent probes to measure the Hubble constant and weigh in on the Hubble tension. In my talk I will discuss the time delay measurements for the first resolved strongly lensed Type Ia supernova, iPTF16geu. I will also review spectroscopic observations of SN Zwicky, the first lensed supernova discovered by Zwicky Transient Facility, including JWST observations in the nebular phase. I will summarise ongoing results on novel time-delay inference methods - e.g., using spectroscopy - for precision cosmology. In the LSST era, we expect tens of lensed SNe per year. In this talk, I will summarise ongoing work on the impact of the survey cadence and systematics on the lensed SN discovery rate. Finally, I will show unpublished results on constraints spatial curvature with lensed transients as a novel probe.
