First massive galaxy clusters emerging from the cosmic web at z~2
Stefano ANDREON (INAF-OA Brera, Milan, Italie)
Mardi 12/12/2023, 10:00
Bat 713, salle de séminaires Galilée , CEA Saclay, Orme des Merisiers

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.

Contact local : Jean-Charles CUILLANDRE

Organisateur : Carlos GÓMEZ GUIJARRO

Contact : Frederic GALLIANO


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