Title: Testing Hubble Tension with Strong Gravitational Lensing

Speaker: Dr. Yuting Liu（Inner Mongolia University）

Time: 14:00pm, December 3, 2024

Location: 5-516, PMO Xianlin Campus

Abstract: In 2017, Wendy Friedman highlighted that cosmology is at a crossroads, as tensions have emerged within the field. Among these tensions, the Hubble tension stands out as one of the most prominent, which may potentially signify the need for new physics to explain discrepancies in current cosmology.  In this talk, I will delve into the Hubble Tension, leveraging insights from the first-discovered galaxy cluster lensed quasar system SDSS J1004+4112 and galaxy cluster lensed supernova SN Refsdal in MACS J1149.5+2223, as well as exploring the opportunities that  galaxy cluster strong gravitational lensing offers for us to constrain Hubble constant.