Title: The interplay of cluster galaxies and intracluster medium

Speaker: Chong Ge

Abstract: Galaxy clusters are the most massive gravitationally bound objects in the Universe, with their immense gravity binding almost all baryons. A small fraction of these baryons turn into galaxies, while most cluster baryons are in the form of intracluster medium (ICM). Galaxy clusters serve as excellent laboratories for studying baryonic physics and environmental effects. When galaxies plunge at high speed into the cluster atmosphere, like meteoroids entering the Earth's atmosphere, they experience ram pressure stripping (RPS) from the ICM, resulting in RPS galaxies that resemble meteors. Through multi-wavelength observations, we reveal the evolution of RPS galaxies and the relation of stripped multiphase gas. Notably, shock generated during cluster mergers can enhance the RPS process. Additionally, we explore the impact of Mpc scale merger shock on star-forming galaxies and radio galaxies.

Bio: Dr. Chong Ge is a professor in the Astronomy Department of Xiamen University. He obtained his PhD in Astronomy from Nanjing University in 2015, he then worked as a postdoctoral researcher at the Purple Mountain Observatory, Chinese Academy of Sciences from 2015 to 2017, and at the University of Alabama in Huntsville from 2017 to 2021. In 2022, he joined Xiamen University. His primary research focuses on galaxy cluster, galaxy evolution and high energy astrophysics.

Time: 14:00-15:00, 8/Jan, Wednesday
Venue: Room 506 (Large seminar room), Department of Astronomy

You can also access the colloquium via :

https://www.koushare.com/space/329883/live-series/4614