REMINDER - High Energy Physics Seminar TODAY - Parameswaran - venue: Euler LH

[HECAP - Margherita Di Giovannantonio]

*_HIGH ENERGY PHYSICS SEMINARS_*
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*Tuesday, 21 April *2026, at *16:00* - *_Euler Lecture 
Hall_***-*https://indico.ictp.it/event/11322/*

Ajith Parameswaran (ICTS, TIFR - Bangalore)


*“Lensing of Gravitational Waves: A New Tool for Cosmology"*
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_Abstract_

Next-generation gravitational-wave (GW) detectors are expected to detect 
millions of binary black hole mergers during their operation period. A 
small fraction (∼0.1–1%) of them will be strongly lensed by intervening 
galaxies and clusters, producing multiple copies of the GW signals. The 
expected number of lensed events and the distribution of the time delay 
between lensed images will depend on the cosmological parameters and the 
large scale structure in the universe. Thus, future observations of 
strongly lensed GWs will provide a new way of probing cosmology, 
including new measurements of cosmological parameters, the distribution 
of dark matter halos and the nature of dark matter. This talk will 
introduce the exciting prospects of GW lensing.

To attend via _*Zoom*_, please *_register_* here:
https://zoom.us/meeting/register/MsiZmY6-Q3SdaZbepRgYQQ