LOFAR detection of extended emission around a mini halo in the galaxy cluster Abell 1413
LOFAR detection of extended emission around a mini halo in the galaxy cluster Abell 1413
Context. The relation between giant radio halos and mini halos in galaxy clusters is not understood. The former are usually associated with merging clusters, while the latter are found in relaxed systems. In recent years, the advent of low-frequency radio observations has challenged this dichotomy by finding intermediate objects with …