Thông báo seminar tại TT ICISE Quy Nhơn

Tiêu đề/Title:
Galaxy Clusters: Evolution of Baryonic Properties via Hydrodynamic Simulations
Người trình bày/Speaker:
Dr. Trương Xuân Nhựt
University of Rome “Tor Vergata”, Italy
Thời gian/Time:
08:30 AM, Thứ Sáu, ngày 03-3-2017
Địa điểm/Venue:
Meeting room 1, ICISE, Ghềnh Ráng, Quy Nhơn
Tóm tắt/Abstract:
Galaxy clusters are the most massive structure in the Universe and the latest gravitationally bound objects to form. Given such a privileged position in the cosmic timeline, galaxy clusters are powerful cosmological probes. In order to fully realize that power, precise measurement of cluster mass is an essential requirement. However, direct methods to measure cluster mass are observationally expensive in terms of high-demanding instrumental sensitivity and long exposure time. This is particularly relevant when measuring mass for large cluster samples. For this reason, one needs to rely on mass-observable scaling relations, those connect the cluster mass to other easily observable properties.

My PhD research concentrates on the studies of the intra-cluster-medium (ICM) properties and their intrinsic relations with the cluster mass, based on state-of-the-art cosmological hydrodynamical simulations of galaxy clusters. The goal of the studies is to characterize how simulated scaling relations between cluster mass and observable quantities as if obtained from X-ray and Sunyaev Zel’dovich (SZ) observations, and how those relations evolve toward high redshifts. Those studies are particularly relevant to the vision that near future clusters missions, such as e-ROSITA or ATHENA, would provide us hundreds of thousands galaxy clusters out to redshifts z>1. In this seminar, I will present the study on X-ray scaling relations based on samples taken from a large suit of cosmological simulations of galaxy clusters. I will first address the comparison between simulated scaling relations and those obtained from low- and intermediate-redshifts. Then I will present and discuss the results on the evolution of those simulated relations from z=0 to z=2.

Kính mời tất cả mọi người quan tâm đến dự!
All those interested are welcome to attend!
Người chủ trì/Host person: Lê Đức Ninh