First measurement of the cross-correlation of CMB lensing and galaxy lensing
First measurement of the cross-correlation of CMB lensing and galaxy lensing
We measure the cross-correlation of cosmic microwave background lensing convergence maps derived from Atacama Cosmology Telescope data with galaxy lensing convergence maps as measured by the Canada-France-Hawaii Telescope Stripe 82 Survey. The CMB-galaxy lensing cross power spectrum is measured for the first time with a significance of 4.2{\sigma}, which corresponds …