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Explore a 32-minute physics lecture from the Workshop on "Lensing and Wave Optics in Strong Gravity" that delves into how strong gravitational lensing can be used to measure the proper motion of gravitational wave sources. Learn how different lensed images allow observers to view sources from multiple sightlines, enabling the measurement of Doppler shifts to determine source velocity vectors. Discover how next-generation detectors like Einstein Telescope and Cosmic Explorer will be capable of inferring transverse velocities of binary black hole mergers up to redshift 3-4, with significant implications for both gravitational wave science and cosmology. Gain insights into this cutting-edge research presented at the Erwin Schrödinger International Institute for Mathematics and Physics.
