Cosmic Origins
Location
Virtual
Dates
22 January 20264:00pm ET / 1:00pm PT
Community
DGCE SIG
Type
Seminar
Mapping Hot Gas Kinematics in Galaxy Clusters with XRISM: What Have We Learned So Far?
Speaker
Irina Zhuravleva, University of Chicago
Abstract
The XRISM observatory (JAXA/NASA), launched in September 2023, is now providing the long-awaited high-resolution X-ray spectra of extended sources such as galaxy clusters, enabling direct measurements of hot gas motions. These observations add a dynamical dimension to studies of the intracluster medium and offer unprecedented insight into energy transport driven by supermassive black hole feedback and cluster mergers.I will review the first XRISM results from observations of bright, nearby galaxy clusters, focusing on what they reveal about feedback processes, turbulence properties, the physics of cluster mergers, and the level of non-thermal pressure support in the cluster outskirts, which is important for cluster cosmology.
Seminar Connection
Join the Seminar
Meeting ID: 971 1027 5736
Passcode: 326183
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