Title:  HyperMillennium: Simulating Galaxies and AGNs for the Next Generation of Large-Scale Surveys

Speaker: 郭琦

Institute: 国家天文台

Host: 杜敏

Time: 2025.4.10 周四 14:30

Location: 物理楼 552

Abstract:

Dark matter and dark energy are among the most important cutting-edge sciences. Extensive global efforts have been dedicated to the large-scale structure evolution through projects like LSST, DESI, Euclid, PFS, and the Chinese space station optical survey. We have successfully completed a N-body cosmological simulation that traces 4 trillion particles from redshift 100 to the present day within a 2.5 Gpc/h box. The particle mass is 3.2 x 10^8 solar masses, meeting the requirements for the next generation of large-scale structure surveys. This simulation aids in understanding the systemic and statistical uncertainties involved in studying large-scale structure formation, including baryon acoustic oscillations, redshift distortion, weak lensing, high redshift AGNs and etc. In my presentation, I will delve into the details of the simulation, discussing key advancements in galaxy and AGN formation models, as well as the applications of semi-analytical galaxy catalogs.

Bio:

Prof. Qi Guo is a research fellow at the National Astronomical Observatory of China and deputy director of the Key Laboratory of Computational Astrophysics at the Chinese Academy of Sciences. She received her Ph.D. from the University of Munich in 2009 and conducted postdoctoral research at Durham University. In 2013, she joined the National Astronomical Observatory of the Chinese Academy of Sciences. Her research focuses on galaxy cosmology, and she has made a series of high-profile contributions in both theoretical and observational aspects. She was awarded the Chinese Academy of Sciences Young Scientist Award in 2020 , and the National Science Fund for Distinguished Young Scholars in 2024.

Related papers:

Arxiv: 2404.00092, 2401.10342