Seminars : Documents

Strong gravitational lensing as a probe of Gravity: multi-messenger approach
Tao Yang (Beijing Normal University)

Strong gravitational lensing by galaxies provide us a unique opportunity to understand the nature of gravity on the galactic and extra-galactic scales. In this talk, I will introduce our recent work in which we propose a multi-messenger approach by combining data from both gravitational wave and the corresponding electromagnetic counterpart to probe the deviations from GR. Our work shows that with one typical strongly lensed GW+EM event in the future, the multi-messenger approach is able to distinguish about 10% modified gravity effect on tens of kiloparsec scale.