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Speaker: Irina Zhuravleva (U. Chicago)
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Title: Unveiling Hot Gas Kinematics in Galaxy Clusters with XRISM: Stormy Weather, Multiple Cascades, and Calm Outskirts
Abstract: The recent launch of the XRISM observatory has opened a new era in high-energy astrophysics, providing high-resolution X-ray spectra of various X-ray sources, including the long-awaited spectra of extended X-ray sources like clusters of galaxies. Direct measurements of hot gas kinematics are now possible, providing crucial insights into energy circulation in supermassive black hole feedback and cluster mergers - key processes in the evolution of galaxies and large-scale structures.
In this talk, I will present XRISM results from observations of well-known bright galaxy clusters. I will discuss multiple velocity cascades in the core of the Perseus cluster strongly affected by AGN feedback, the “stormy weather” of the Coma merging cluster and its unusual velocity power spectrum despite being considered a textbook example of ICM turbulence, gas kinematic studies in a relaxed cluster A2029 out to cosmologically interesting radii, along with other exciting findings.
Visitor's room: 129
Visit Schedule:
Visit Schedule:
Tuesday
9:00 am. eliot peyton 127
9:30 a.m.: Dongzi Li (peyton 109)
10:00 a.m: Rajsekhar Mohapatra (107)
10:30 a.m.: Coffee
11:00 a.m.: Colloquium
11:30 a.m.: Colloquium
12:00 p.m.: Bahcall lunch
12:30 p.m.: Bahcall lunch
1:00 p.m.: Bahcall lunch
1:30 p.m.: Minghao Guo
2:00 p.m.: Andrew Saydjari (Peyton 109A)
2:30 p.m.: Anatoly Spitkovsky (Peyton 123)
3:00 p.m.: Riddhi Bandyopadhyay (visitor office)
3:30 p.m.: Matthew Kunz (Peyton 126)
4:00 p.m.: Stephen Majeski (your visitor office)
4:30 p.m.: Tea Time with Grad Students in Grand Central
5:00 p.m.: Tea Time with Grad Students in Grand Central
Dinner Sign-up - add your name here:
Dinner Sign-up - add your name here:
Day of week (4.22 2025) Joint Dinner with the IAS -- Blue Point Grill @ 6:30
Faculty Host: Matthew Kunz
Postdoc Host: Rajsekhar Mohapatra
James Sunseri
Miguel Montalvo
Ronan Hix
Yue Pan
Minghao Guo
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