RSN 1: Galassie e Cosmologia: The outer structure of galaxy clusters

Dottorato - PhD thesis

Area Tematica: RSN 1: Galassie e Cosmologia

Referenti: Andrea Biviano (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Titolo: The outer structure of galaxy clusters
Decorrenza: 11.05.2026

Descrizione:

Cosmological simulations have revealed a distinct feature in the mass density profiles of galaxy clusters known as the 'splashback radius' (rsp​). This boundary is theoretically linked to a cluster’s mass accretion history (Diemer & Kravtsov 2014). Using public data from the Dark Energy Spectroscopic Instrument (DESI), we aim to empirically test this prediction. We will identify the splashback radius within a cluster sample using the kinematic method proposed by Tomooka et al. (2020). Finally, we will evaluate how rsp​ correlates with current accretion rates, using the clusters' dynamical status—derived from both optical and eROSITA X-ray data—as a proxy.