When:
Tuesday, November 29, 2022
3:45 PM - 4:45 PM CT
Where: 1800 Sherman Avenue, 7-600, Evanston, IL 60201 Evanston map it
Audience: Faculty/Staff - Student - Post Docs/Docs - Graduate Students
Contact:
Joan West
(847) 491-3685
Group: Physics and Astronomy Astrophysics Seminars
Category: Academic
FRBs and gravitational waves are the only distant sources sufficiently coherent to exhibit wave optics phenomena in their propagation. Nominally FRBs probe affects with equivalent strain h~10^{-26), one of the most sensitive observables. I discuss new observables, including precision microlensing interferometry sensitive to extragalactic planets and constraints on scalar gravity. Wave optics presents new theoretical challenges, some of which Picard-Lefschetz theory resolves. The introduction of complex images opens the inference of time delay measurements even when no real lensed images are formed.
Speaker: Ue-Li Pen, Professor CITA University of Toronto
Host: Professor Dr.Giacomo Fragione, Research Assistant Professor, CIERA