State of the Universe
Studying stars at the reionization epoch with gravitational lensing
by Prof. Jose Maria Diego (Instituto de Física de Cantabria)
Friday, April 1, 2022
from
to
(Asia/Kolkata)
at Zoom Meeting: https://us02web.zoom.us/j/82512956967?pwd=angyQ0ZDdHZUdzFUbjkybmxsWFNFUT09 Meeting ID: 825 1295 6967 Passcode: 384194
at Zoom Meeting: https://us02web.zoom.us/j/82512956967?pwd=angyQ0ZDdHZUdzFUbjkybmxsWFNFUT09 Meeting ID: 825 1295 6967 Passcode: 384194
Description |
The recent discovery of strongly lensed stars such as Icarus, Warhol, Godzilla, and more recently Earendel has pushed the limits of the maximum distance at which stars can be studied individually. Currently, Earendel holds the record for the most distant star at an estimated redshift of 6.2 and promises a wealth of even more distant stars to come with the newly launched JWST telescope. Studying individual stars at redshifts larger than six is no longer science fiction but belongs to the realm of what is possible to achieve with current technology. In this talk, I will review the recent discoveries of strongly lensed stars, and the unique opportunities offered by this new type of observations to study not only the formation and evolution of the first stars but also to constrain models of dark matter. |