IPMU Colloquium

Speaker: Sherry Suyu (MPG)
Title: Cosmology with Strong Lensing
Date (JST): Wed, Dec 14, 2022, 16:00 - 17:30
Place: Zoom
Abstract: An intriguing tension in the measurements of the Hubble constant (H0, that sets the expansion rate of the Universe) has emerged in recent years. Independent determinations of H0 are important to assess the tension, which if verified, would imply new physics beyond the standard cosmological model. I will show independent methods to measure H0, particularly strong gravitational lenses with measured time delays between the multiple images. Exciting discoveries of the first strongly lensed supernovae offer new opportunities for measuring H0, and I will describe ways to find lensed supernovae. I will show the bright prospects of gravitational lens time delays as an independent and competitive cosmological probe.