First Massive Galaxy Clusters Emerging from the Cosmic Web at Z~2

In this talk I report upon our results on the intracluster medium (ICM) of two clusters at the time when first clusters start to emerge from the cosmic web, z~2. Results are derived from new, high resolution, deep SZ and X-ray data providing us with the measurement of the two most distant resolved pressure profiles. IDCSJ1426 cluster at z=1.75 has a core whose properties are not far from the final stage, while the remaining part of the cluster is experiencing a sizable gas, heat and entropy transfer. JKCS041 at z=1.80 is caught just after a major merger event as evidenced by its SZ-X-ray peak offset, its low central pressure, and its low Compton-Y parameter compared to its WL mass. Comparison with plausible descendents shows that its ICM will experience major changes at all radii.
Brief CV of Dr. Stefano Andreon:

is an astronomer (69 scientific articles as first author, about 2000 citations, h-index 39; source ADS) and statistician. His main interest is understanding how galaxy clusters and galaxies within clusters evolve from an observational standpoint and using Bayesian methods that he himself teaches (so far in 13 universities across 7 countries). His three most cited articles are dedicated to the mass dependence and dispersion of stellar and gas fractions, and the evolution of faint galaxies on the red sequence. He discovered the galaxy cluster at the second highest known redshift, JKCS041 at z=1.803 (the most distant for over a decade). He was one of the first astronomers to use artificial intelligence tools (neural networks, self-organizing maps) for photometric redshift and object detection in the late 90s and, since 2005, Bayesian methods for many astrophysical applications.