Lunch talk on Mar. 11, 2024

On the Cosmic Ecosystem: Insights from the Multiphase Circumgalactic Medium

Speaker:Zhijie Qu (University of Chicago)

Venue:Video Conference

Time:12:30 PM, Monday, Mar. 11, 2024

Abstract:

In the cosmic ecosystem, the circumgalactic medium (CGM) is a massive baryon reservoir of baryonic inflows and outflows, shaping galaxy formation and evolution. The rapid decline of star formation rate from the Cosmic Noon is crucial in defining present-day galaxy characteristics, yet its driving force remains uncertain. Characterizing and modeling the CGM provides new insights into understanding this fundamental transition in galaxy evolution. In this talk, I will review observational constraints on the multiphase CGM using multiwavelength probes. In particular, I will explore the spatial distributions of different phases, with a focus on addressing a fundamental question, do galaxies host all of their baryons within their halos?

Report PPT:SWIFAR_Zhijie Qu.pdf