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The discovery of radio halos in the frontier fields clusters Abell S1063 and Abell 370

The discovery of radio halos in the frontier fields clusters Abell S1063 and Abell 370

Context. Massive merging galaxy clusters often host diffuse megaparsec-scale radio synchrotron emission. This emission originates from relativistic electrons in the ionized intracluster medium. An important question is how these synchrotron emitting relativistic electrons are accelerated. Aims. Our aim is to search for diffuse emission in the Frontier Fields clusters Abell …