【5.13; Seminar】2025年粒子天体物理全国重点实验室系列学术报告 #9：The structure of galaxy clusters & cosmological model

时间/Time: 5月13日周二上午10:00/Tuesday, May 13, 10:00 a.m.

地点/Location: 主楼415会议室/Meeting Room 415, Main Building

报告人/Speaker: Stefano Ettori (INAF-OAS)

题目/Title: The structure of galaxy clusters & cosmological model

主持人/Host: 陈勇/Dr. Yong Chen

摘要/Abstract:

Galaxy clusters are the largest gravitationally bound objects in our Universe, are dark-matter dominated, and have the baryonic mass component mostly composed by X-ray emitting plasma also observable through Sunayev-Zeldovich effect at millimeter wavelengths. Thus, X-ray (and SZ) data provide a unique view of their structure. I will present the current observational constraints on the fundamental properties defining this structure, how these constraints align with the prevailing cosmological paradigm, the outstanding issues, and our strategies to address them with the current (Chandra, XMM-Newton, XRISM, eROSITA) and the next generation (NewAthena) of X-ray observatories to construct a consistent picture of how galaxy clusters form and evolve.

个人简介/Biography:

Stefano Ettori is a senior astrophysicist at INAF-OAS in Bologna, Italy. He specializes in the formation and evolution of galaxy clusters, focusing on their thermodynamic and structural properties. His work integrates multi-wavelength observations and hydrodynamical simulations to study the interplay between hot plasma, dark matter, and large-scale structure formation. With over 470 publications and more than 18,000 citations, Ettori is recognized as a leading expert in cluster astrophysics and cosmology.