The search for massive protoclusters in the early Universe, and next directions with SPT-3G and CCAT
Scott Chapman (Dalhousie University, University of British COlumbia)
Tuesday 12/03/2024 @ 14:00, Sala Antonio Sollima (IV piano Battiferro)
I will describe recent results from the South Pole Telescope (SPT) and ALMA, uncovering massive protoclusters of galaxies at z>4 from their submm emission, and describe ongoing and future surveys with SPT-3G and CCAT in synergy with CMB experiments. A sample of candidate massive protoclusters, discovered from extremely luminous millimeter wave sources in the 2500 deg^2 SPT-SZ survey, has been followed up with ALMA and other facilities to characterize their properties and assess their evolution to massive clusters in the present. Ongoing surveys following up the much deeper next generation SPT-3G survey are searching for even higher redshift millimeter sources and overdense environments. I will then present the development of the wide field 350um imager/polarimeter for the CCAT observatory, to deploy in 2026. Currently the instrument has finalized the opto-mechanical design, and the camera module is being fabricated. Final design of the prototype MKID detectors and readout architecture is underway.