Joint Astrophysical Colloquium
Weak lensing measurements in the era of Euclid (and beyond)
Giuseppe Congedo (University of Edinburgh)
Thursday 02/04/2026 @ 11:30, Sala Antonio Sollima (IV piano Battiferro)
Weak gravitational lensing is the distortion of distant galaxies by the foreground large-scale structure. Euclid will primarily employ weak lensing to constrain dark matter and dark energy to percent precision. The first results will become public by the end of the year, and we are now working hard to prepare the first data release of about 1,900 sq.deg. of extragalactic sky. I will review the effort that is being put into making sure that the lensing measurements are robust and accurate, and present results from pre-launch and early-release data, in anticipation to the first data release. In the remainder of my talk, I will cover the exciting lensing science that could be carried out with future gravitational wave detectors in the coming decade.