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Observations and Simulations of the Interaction of Radio Plasma with the Hot X-ray-emitting Gas in Merging Clusters of Galaxies

Presentation #103.11 in the session Galaxy Clusters/Large Scale Structures - Poster Session.

Published onMay 03, 2024
Observations and Simulations of the Interaction of Radio Plasma with the Hot X-ray-emitting Gas in Merging Clusters of Galaxies

The latest generation of radio observatories has provided us with new views of complicated structures in clusters of galaxies. In particular, a number of interesting structures have been observed that appear to be evidence of the interaction of relativistic plasma with gas motions in the intracluster medium. These include bent jets and lobes, bubbles that appear to have been shredded, and thin filamentary features. It is also possible that the cosmic rays redistributed by these gas motions may be mixed into the thermal plasma and be reaccelerated by a passing shock at a later time, producing a radio relic. All of these structures can be reproduced in hydrodynamical simulations of merging clusters with the effects of active galactic nuclei and cosmic rays included. In this talk, I will give recent observational examples of these features, and present magnetohydrodynamical simulations with cosmic ray physics included which correspond well to these observations. I will show how by matching the simulations to the observations the properties of the gas motions causing the shapes of the radio features may be identified, and the implications for cosmic ray physics in clusters.

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