中国科学院云南天文台学术报告通知

2025年第21期

报告题目：Blowing the eROSITA and Fermi Bubbles in the Milky Way with Galactic Feedback

报告人：郭福来 研究员

报告人单位：中国科学院上海天文台

报告语言：English/中文

报告时间：6月20日（星期五）14:30-16:30

报告地点：1号楼2楼会议室

报告摘要：

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The center of our Milky Way galaxy hosts a series of energetic outbursts, including the well-known Fermi and eROSITA bubbles, Galactic center chimneys, and the inner 15-pc Sgr A lobes. Are they long-lasting or fast evolving explosive events? What causes these structures? The Fermi and eROSITA bubbles may correspond to typical galactic feedback processes occurring in our own Galaxy in the recent past. Galactic feedback is one central unsolved problem in contemporary astronomy, and the Fermi and eROSITA bubbles are also galactic-scale accelerators of cosmic rays, whose origin remains a century-long mystery. In this talk, I will talk about the possible origins of the eROSITA and Fermi bubbles, focusing on our newly-proposed double-episode jet model. We also use LHAASO, a multi-purpose cosmic ray and gamma-ray detection facility of our own country, to constrain the Fermi bubble models.

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报告人简介： 

Dr. Fulai Guo is a professor in the astrophysics division of Shanghai Astronomical Observatory (SHAO), currently leading the “Black Hole Feedback and Cosmic Ray Astrophysics” research group. He received a B.S. degree in astrophysics from University of Science and Technology of China in 2001, and a PhD in Physics from University of California, Santa Barbara in 2008. He then worked consecutively as a postdoctoral researcher at University of California Santa Barbara and at University of California Santa Cruz (UCO/Lick Observatories). In 2012-2015, he was a Zwicky prize fellow at Swiss Federal Institute of Technology Zurich, and in 2015 he joined SHAO. He is a theorist with a wide range of research interests including black hole accretion and feedback, stellar feedback, cosmic ray astrophysics, galaxy evolution, etc.

云台邀请团组：星系类星体研究团组

邀请方联系人：毛基荣