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Seminar: Testing fundamental physics with gravitational wave propagations


The detection of gravitational waves from the LIGO/Virgo collaboration provides an excellent probe for the fundamental physics of gravity with interferometer detectors, and the recent pulsar timing arrays (PTA) detections of stochastic gravitational wave background (SGWB) open a new window due to their different frequency sensitivity (nHz band).

We explore the possibility of testing gravity theory using both interferometers and PTA detectors by studying the impacts of modified propagation of gravitational waves.

On the other hand, astrometry also holds the potential to detect SGWB by precisely measuring the stellar positions. We explore the feasibility of using astrometry for the identification of parity-violating signals which is hard in PTA measurements.



Dr. Lin obtained his PhD from U. Chicago and is now a postdoctoral fellow at the University of Pennsylvania. He has broad interests in various topics in cosmology. Particularly, he specializes in developing theories of the universe that can be tested with cutting-edge cosmological and gravitational wave observations.

Event Details
Dr. Meng-Xiang Lin
Postdoctoral Fellow, University of Pennsylvania

Date & Time
24 January 2024 2 pm

G5-314, Yeung Kin Man Academic Building, City University of Hong Kong

Prof. Sam Wong (34424009)