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Diffuse radio emission from merger shocks in simulated galaxy clusters

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arXiv:2403.18089v1 Announce Type: new
Abstract: Galaxy clusters are the largest gravitationally-bound structures in the Universe. As such, during merger events with similar systems, they release an enormous amount of energy that is dissipated through the formation of shock waves and turbulence in the intracluster medium (ICM), the hot ionised plasma permeating the cluster volume. These shock waves are believed to be ideal sites for electron acceleration that, in the presence of ubiquitous magnetic fields in the ICM, are capable of producing elongated non-thermal radio features typically observed in the outskirts of dynamically disturbed clusters, also known as radio relics. In this work, we analyse a hydrodynamical re-simulation of merging galaxy clusters, extracted from a large set of zoom-in cosmological simulations of The Three Hundred Project, to study the evolution and diversity of merger shocks and their associated diffuse radio emission within the framework of the diffusive shock acceleration scenario.

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