The Crowded Cosmos: Effects of Blended Galaxies on Cosmic Shear
In today’s paper, we learn how overlapping galaxies affect weak lensing measurements that the LSST will make.
The strength of weak lensing
The Canada-France Hawaii Telescope weak gravitational lensing survey (CFHTLens), recently released new results to help constrain our cosmological models. While still in its early stages, weak lensing will ultimately be a powerful tool to discover the nature of the mysterious dark energy.