The Multi-Scale Circumgalactic Medium - Peng Oh - 02/19/2025
Автор: Caltech Astro Seminars
Загружено: 2025-02-19
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This is a high-level research talk designed for professional astronomers. It is part of the Caltech Astronomy TAPIR seminar series, roughly hour-long presentations given by top scientists from around the world to the members of our department. All are welcome to watch these presentations; however, for talks specifically designed for the general public, please see our Caltech Astro Outreach channel: / caltechastro
Date: 02/19/2025
Speaker: Peng Oh, Professor, University of California Santa Barbara
Title: The Multi-Scale Circumgalactic Medium
Abstract: The circumgalactic medium (CGM) mediates inflows and outflows that regulate galaxy formation and growth. Our understanding of the CGM has seen major progress in recent years. We discuss physical processes that shape the exchange of mass, momentum and energy between different gas phases. In particular, we consider scenarios where there is a broad spectrum of cold gas structures, arising from fragmentation, coagulation, and condensation onto gas clouds, and the physical and observational consequences of a multi-scale CGM. We also discuss the influence of non-thermal components such as magnetic fields, turbulence and cosmic rays.
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