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[colloquium] Jian-Min Wang: Measuring distances of quasars through geometric method

发表日期:2020-12-16Jie Ma来源:放大 缩小
国台学术报告2020 10 /NAOC Colloquium No.10 2020


报告题目/Title Measuring distances of quasars through geometric method
报告人/Speaker Prof. Jian-Min Wang (Institute of High Energy Physics, CAS)
报告时间/Time Wednesday 2:30 PM, Dec.16th, 2020
报告地点/Location A601, NAOC & Live Streaming
主持人/Host Dr. Gongbo Zhao


报告摘要/Abstract
Quasars are cosmological celetial objects, but their distances have been hardly measured so far. Thanks are given to GRAVITY/VLTI for its powerful capbilities of spatial resolution (10 μas) of 3C 273 broad-line regions. This offers an opportunity of measurimg quasar distances through geometric method. In this talk, I will explain a new geometric scheme of quasar distances through GRAVITY/VLTI and reverberation mapping. It is totally independent of extinction, dereddening, standarization and calibrations of cosmic ladders. Successful application of the scheme was done for 3C 273.  


报告人介绍/Bio:
Prof. Jian-Min Wang joined IHEP under "The Hundred Talents Program" in 1999. He was graduated from National University of Defense Technology in 1987, and got his PhD at University of Science and Techonolgy of China in 1995. He was supported by the National Science Fund for Distinguished Young Scholars in 2003, and awarded the Huang Run-Qian Prize for Astrophysics in 2020. His major interests are qusasrs for supermassive black hole masses, cosmology and nano-Hz gravitational waves.


报告海报/Poster Click to download the poster
演示幻灯片/Slides Click to download the slides
报告视频/Video Click to watch the video
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