Early evolution of galaxies and of large-scale structure from CMB experiments

Gianfranco De Zotti, Matteo Bonato, Mattia Negrello, Diego Herranz, Marcos Lopez-Caniego, Tiziana Trombetti, Carlo Burigana, Laura Bonavera, Joaquin Gonzalez-Nuevo, Shaul Hanany, Graca Rocha

Published 2019-04-09Version 1

Next generation CMB experiments with arcmin resolution will, for free, lay the foundations for a real breakthrough on the study of the early evolution of galaxies and galaxy clusters, thanks to the detection of large samples of strongly gravitationally lensed galaxies and of proto-clusters of dusty galaxies up to high redshifts. This has an enormous legacy value. High resolution follow-up of strongly lensed galaxies will allow the direct investigation of their structure and kinematics up to z~6, providing direct information on physical processes driving their evolution. Follow-up of proto-clusters will allow an observational validation of the formation history of the most massive dark matter halos up to z~4, well beyond the redshift range accessible via X-ray or SZ measurements. These experiments will also allow a giant leap forward in the determination of polarization properties of extragalactic sources, and will provide a complete census of cold dust available for star formation in the local universe.