The Resolved Cluster Evolution SZ Survey (ReCESS) is a project that studies the formation of the intracluster medium (ICM) in galaxy clusters at the epoch of their emergence. By examining these high-z clusters, initially selected through ACT observations, I aim to study their dynamical states, thermodynamics, and evolutionary processes, as I explain in this talk.

I am leading this multiwavelength project that now has secured over 200+ observing hours on the GBT and ALMA to systematically follow up on all z > 1.25 clusters detected by ACT. These observations will allow us to study clusters during their most active growth periods and address systematics in cluster cosmology measurements at these uncharted epochs. 

Key Papers:

• XLSSC 122 caught in the act of growing up: Spatially resolved SZ observations of a z = 1.98 galaxy cluster.

Related Works:

• The MeerKAT Massive Distant Clusters Survey: detection of diffuse radio emission in galaxy clusters at z > 1

• Exploring the Masses of the Two Most Distant Gravitational Lensing Clusters at Cosmic Noon