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理學講壇Science Forum|景益鵬：Yipeng Jing: S8 tension: not a real problem?
時間
2025年9月9日（星期二）
14:00-15:00
地點
西湖大學云谷校區E10-211
主持
西湖大學理學院天文系施勇教授
受眾
全體師生
分類
學術與研究
理學講壇Science Forum|景益鵬：Yipeng Jing: S8 tension: not a real problem?
時間:?2025年9月9日（星期二）14:00-15:00
Time:?14:00-15:00, Tuesday, September 9, 2025
主持人:?西湖大學理學院天文系施勇教授
Host:? Prof. Yong Shi, Department of Astronomy, School of Science, Westlake University
地址：西湖大學云谷校區E10-211
Venue:?E10-211, Yungu Campus, Westlake University
講座語言：英文
Lecture Language:?English
景益鵬院士
中國科學院院士，上海交通大學李政道研究所及物理與天文學院講席教授
Prof. Yipeng Jing
Member of the Chinese Academy of Sciences (CAS),?
Chair Professor of TD Lee Institute & School of Physics and Astronomy,
Shanghai Jiao Tong University
主講人/Speaker:
Yipeng Jing is a professor of Shanghai Jiao Tong University (SJTU). His research is mainly on the formation and evolution of galaxies and on the large-scale structures in the Universe. He got his PhD from the International School for Advanced Studies, Italy in 1992. He had worked for 12 years as a professor at Shanghai Astronomical Observatory before he moved to SJTU in 2012. He was elected to a member of the Chinese Academy of Sciences in 2015, became the founding director of the Department of Astronomy in SJTU in 2017, and served as the President of the Chinese Astronomical Society from 2018 to 2022.
講座摘要/Abstract:
S8 tension is one between the measurements from developed structures (z<1) and undeveloped ones (CMB; z=1100). We study this problem by developing a novel method to measure the lensing magnification of BOSS CMASS galaxies, and show that our derived S8 is in perfect agreement with the Planck S8. Furthermore, I will show that existing weak lensing and CMB lensing observations of BOSS galaxies in literature are also in agreement with the Planck S8. I will attribute the successful resolutions to our better understanding of the BOSS galaxies in their relation to dark matter halos and their observational incompleteness. I will finally briefly discuss the S8 problem in a broader context.
講座聯系人/Contact:
School of Science, Wenwen Feng, Email: fengwenwen@westlake.edu.cn
