報告題目：The Hot and Dynamic Galactic Center: An X-ray Perspective

主講人：李志遠  南京大學  教授

主持人：楊雪娟  教授

報告時間：2024年5月7日（周二）14:00-15:00

報告地點：物理院主樓306報告廳

內容簡介：The central few hundred parsec region of our Galaxy, loosely defined as the Galactic Center, offers the best opportunity to study a wide range of physical processes and intriguing phenomena in the vicinity of a super-massive black hole (SMBH), known as Sgr A*. In this talk, I will provide a brief overview of the enigmatic Galactic Center seen through X-rays, which are the prime tracer of close binaries and diffuse hot gas. I will then introduce several recent case studies by our team, based primarily on Chandra X-ray observations and hydrodynamic simulations. These include: (1) Massive, colliding wind binaries surrunding Sgr A* and their implications on the Galactic Center metallicity, (2) Evolution of the supernova remnant closest to Sgr A* and its potential impact, and (3) Origin of the 100-parsec-long "X-ray chimney", a putative bi-polar outflow. When time permits, I will also touch on topics related to the X-ray binary populations in the Galactic Center.

講者簡介：李志遠，國家杰青，1995－2002年就讀于南京大學天文學系并獲得學士及碩士學位，2002-2008年就讀于美國麻薩諸塞大學并獲得天體物理博士學位，隨后任職哈佛－史密松天體物理中心博士后以及加州大學洛杉磯分校物理與天文系任助理研究員。2013年起任職于南京大學天文與空間科學學院。主要研究興趣為近鄰宇宙中的高能天體物理過程。迄今作為項目主持人共承擔或完成了包括利用錢德拉X射線望遠鏡、牛頓X射線望遠鏡、哈勃空間望遠鏡、赫歇爾紅外望遠鏡、甚大射電陣列等近20項多波段觀測計劃。

恒星與星際物質湖南省高校重點實驗室

湘潭大學物理與光電工程學院