【韶风名家论坛】The Hot and Dynamic Galactic Center: An X-ray Perspective

2024 5
7

报告题目:The Hot and Dynamic Galactic Center: An X-ray Perspective

主讲人:李志远  南京大学  教授

主持人:杨雪娟  教授

报告时间:2024年5月7日(周二)14:00-15:00

报告地点:物理院主楼306报告厅

内容简介: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.

讲者简介:李志远,国家杰青,1995-2002年就读于南京大学天文学系并获得学士及硕士学位,2002-2008年就读于美国麻萨诸塞大学并获得天体物理博士学位,随后任职哈佛-史密松天体物理中心博士后以及加州大学洛杉矶分校物理与天文系任助理研究员。2013年起任职于南京大学天文与空间科学学院。主要研究兴趣为近邻宇宙中的高能天体物理过程。迄今作为项目主持人共承担或完成了包括利用钱德拉X射线望远镜、牛顿X射线望远镜、哈勃空间望远镜、赫歇尔红外望远镜、甚大射电阵列等近20项多波段观测计划。


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