Speaker
Maciej Bilicki
(Center for Theoretical Physics, Polish Academy of Sciences)
Description
Weak gravitational lensing - small distortions of photon paths due to the large-scale structure of the Universe - is an emerging cosmological probe, also known as "cosmic shear". I will present recent results of today's main cosmic shear surveys, with a focus on the Kilo-Degree Survey (KiDS) in which I take part. I will in particular discuss the current status of the so-called "$S_8$ tension". I will also mention some other applications of weak lensing in KiDS, which include smaller-scale investigations of galaxies and their dark matter haloes. Using KiDS as an example, I will point to some challenges that current and forthcoming weak lensing surveys are facing.
| Collaboration / Activity | Kilo-Degree Survey |
|---|
Primary author
Maciej Bilicki
(Center for Theoretical Physics, Polish Academy of Sciences)
