報(bào)告題目：The Hot and Dynamic Galactic Center: An X-ray Perspective

主講人：李志遠(yuǎn)  南京大學(xué)  教授

主持人：楊雪娟  教授

報(bào)告時(shí)間：2024年5月7日（周二）14:00-15:00

報(bào)告地點(diǎn)：物理院主樓306報(bào)告廳

內(nèi)容簡(jiǎn)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(jiǎn)介：李志遠(yuǎn)，國(guó)家杰青，1995－2002年就讀于南京大學(xué)天文學(xué)系并獲得學(xué)士及碩士學(xué)位，2002-2008年就讀于美國(guó)麻薩諸塞大學(xué)并獲得天體物理博士學(xué)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(xué)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(xué)天文與空間科學(xué)學(xué)院。主要研究興趣為近鄰宇宙中的高能天體物理過(guò)程。迄今作為項(xiàng)目主持人共承擔(dān)或完成了包括利用錢(qián)德拉X射線(xiàn)望遠(yuǎn)鏡、牛頓X射線(xiàn)望遠(yuǎn)鏡、哈勃空間望遠(yuǎn)鏡、赫歇爾紅外望遠(yuǎn)鏡、甚大射電陣列等近20項(xiàng)多波段觀(guān)測(cè)計(jì)劃。

恒星與星際物質(zhì)湖南省高校重點(diǎn)實(shí)驗(yàn)室

湘潭大學(xué)物理與光電工程學(xué)院