Meet-up Link: https://www.meetup.com/astronomy-131/events/315363559/
Date: Thursday, July 9, 7:30 PM
Location: SFU Burnaby, room AQ3149
Topic: Searching for Nature’s Magnifying Glass with the Euclid Space Telescope
Speaker: Hrishabh Srivastava

Abstract: Strong gravitational lensing is one of the most incredible phenomena of nature, and a direct consequence of Einstein’s general relativity. Not only does it help produce a magnified image of the background galaxy, but it is also a direct probe of the dark matter distribution of the foreground galaxy. Yet despite this potential, only a few thousand strong lenses have been discovered to date, constrained by the limited resolution and field of view of past telescopes. Euclid is set to change that. With its wide field of view and exceptionally fine resolution, it is expected to find over a hundred thousand new galaxy-galaxy strong lenses. This talk will introduce the idea of strong lensing and move on to explaining how the Euclid Strong Lensing Science Working Group is using artificial intelligence to find them, before getting into my research on using a surprisingly simple mathematical tool to discover these objects, about 10 times faster than AI.
Bio: Hrishabh Srivastava is a second-year MSc student in Astronomy and a member of the Euclid Strong Lensing Science Working Group. After beginning his academic journey in engineering and data science at the Indian Institute of Technology, Madras, he transitioned into astrophysics to pursue his long-standing interest in astronomy. His research focuses on identifying strong gravitational lenses in Euclid images to better understand the Universe. Outside of research, he enjoys hiking, reading historical philosophy, and communicating science to wider audiences









