题 目：The frontiers of Circum-Galactic Mediums
报告人：纪丽 Purple Mountain Observatory, CAS
主持人：刘尧 副研究员
时间：2025年7月31日（周四)10:00
地点：犀浦校区二教2539会议室
腾讯会议：910-610-576
Biography: Dr. Li Ji is a chief scientist of Ultraviolet and X-ray astronomy group in Purple Mountain Observatory since 2017. She received B.A. and M.A. in Astronomy from Nanjing University in China and obtained a Ph. D. in Astrophysics from University of Massachusetts at Amherst, USA in 2006.She was a postdoc in MIT Kavli institution for Astrophysics and Space Research from 2006-2010, then she took a visiting scientist position in Smithonian Astrophysical Observatory for half a year before she fully settled down as a full-time faculty member in Purple Mountain Observatory, CAS in China in 2011.She experts in the line diagnostics for the high-resolution spectra.Her research covers a broad range of UV/X-ray fields for the diffuse emissions from the small scale to the larger scale, such as accretion disk corona in the X-ray binaries, SgrA* and its vicinities, SNR, stellar cluster winds, warm-absorbers in AGN, super winds of starburst galaxies, CGMs, WHIM and so on. In recent years, she has devoted herself to the investigation of the technologies and science for mapping Lyman UV emission of diffuse sources.
Abstract: Circum-Galactic Medium (CGMs) are multi-phases, key to understand the galaxy ecosystem and its accretion and feedback. Mapping thecircumgalactic medium (CGM) in emission is one of the important scientific goals for astronomers to either use the modern ground-based telescopes or the future space missions. In this talk, I will overview the frontiers of CGMs, emphasizing the warm-hot phase, which is believed to be the baryons reservoir of the missing baryons. I also overview the related observation strategies in the world as well as some explorations in China. I I will highlight the prospects in CGM fields based on the existing and future facilities (such as SMILE, CSST, CAFÉ, HUBS etc.) in China.
