完整报告视频回放链接:https://www.koushare.com/space/329298/live中国科大寰宇开物天文讲坛致力于为广大天文科研工作者与关注天文研究进展的人们提供一个学术交流与天文知识传播的平台。“寰宇开物”寓意为力求通晓宇宙中万物——这是天文学研究的不懈追求。The Universe, Yours to Discover!
报告人:郭琦
题目:Hyper-Millennium project: a huge cosmological simulation for the next generation of large-scale structure survey
个人简介:郭琦是国家天文台研究员,同时也是国家天文台计算宇宙学重点实验室副主任。她于2009年从慕尼黑大学获得博士学位,并在杜伦大学进行博士后研究。2013年,她被选入国家级青年科学家项目,并加入中国科学院国家天文台。现为基金委杰青。她的研究重点是星系宇宙学,在理论和观测方面都取得了一系列高水平的成果和贡献。曾获得2020年中国科学院青年科学家奖和2016年皇家学会牛顿高级学者奖。
摘要: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 and discuss advancements made in galaxy and AGN formation models.