云南大学中国西南天文研究所

 首页 Home | 研究所简介 SWIFAR | 人员 People | 科学研究 Science | 科研平台 Platform | 学术活动 Activities | 人才培养 Education | 国际合作 Collaborations | 科学普及 Outreach | 诚聘英才 Recruitment | 访问指南 For Visitors 
 
 首页 Home 
 研究所简介 SWIFAR 
 人员 People 
 科学研究 Science 
 学术活动 Activities 
 人才培养 Education 
 科学普及 Outreach 
 诚聘英才 Recruitment 
 访问指南 For Visitors 
 内部链接 Internal 
 
  过往活动 Past Events
当前位置: 首页 Home>>过往活动 Past Events>>正文
 

Lunch talk on Dec. 30, 2024

Galaxy cluster merger shocks


Speaker: Chong Ge (XMU)

Venue: SWIFAR Building 2111

Time: 12:45 PM, Monday, Dec. 30, 2024

Abstract: 

Galaxy clusters are the most massive virialized systems in the Universe, forming hierarchically through the merger of smaller substructures. Major cluster mergers are the most energetic events since the Big Bang, with a substantial portion of the merger energy dissipated into the intracluster medium (ICM) through shock heating. The shocks can also re-accelerate pre-existing seed relativistic electrons in intracluster magnetic fields to produce radio synchrotron emissions known as radio relics or radio shocks. We find that seed electrons of radio relics may originate from star-forming (SF) activities besides the active galactic nucleus (AGN). We also constrain the intracluster magnetic fields based on the X-ray and radio observations. In addition, we provide evidence that cluster merger shocks can change cluster member galaxies and AGN jets.


Report PPT:  SWIFAR_Chong Ge.pdf

附件【SWIFAR_Chong Ge.pdf已下载
关闭窗口

版权所有:云南大学中国西南天文研究所 

South-Western Institute For Astronomy Research, YNU