Seminar reviews XRISM measurements of hot gas motions in galaxy clusters

The DGCE SIG will hold a virtual seminar on 22 January 2026 at 4:00pm ET / 1:00pm PT featuring Irina Zhuravleva of the University of Chicago on mapping hot gas kinematics in galaxy clusters with XRISM.

The talk focuses on the XRISM observatory (JAXA/NASA), launched in September 2023, which is providing high-resolution X-ray spectra of extended sources such as galaxy clusters and enabling direct measurements of hot gas motions.

According to the seminar abstract, these observations add a dynamical dimension to studies of the intracluster medium and offer insight into energy transport driven by supermassive black hole feedback and cluster mergers. Zhuravleva will review the first XRISM results from observations of bright, nearby galaxy clusters, with emphasis on feedback processes, turbulence properties, the physics of cluster mergers, and the level of non-thermal pressure support in cluster outskirts, which the abstract says is important for cluster cosmology.

To join the seminar, use Meeting ID: 971 1027 5736 and Passcode: 326183.

Key Topics

Science, Xrism, Galaxy Clusters, Intracluster Medium, Irina Zhuravleva, Jaxa