Speaker
Description
The nearby Coma galaxy cluster is a milestone for exploring magnetic fields and particle acceleration processes in the intra-cluster medium (ICM). Recent LOFAR observations at 144 MHz have revealed new features in the extended radio emission of this cluster: a bridge connecting the halo to the cluster, a sharp radio front at the halo's edge, and a compelling "accretion relic" situated beyond the cluster virial radius. At the 2023 LOFAR Family Meeting, I presented initial findings from in-depth (108 hours) follow-up observations of Coma at 54 MHz, conducted using Low Band Antennas. In this presentation, I will delve into the continuation of our analysis, focusing on a spatially resolved examination of the spectral index between 54 and 144 MHz. Finally, the proposed particle acceleration models can be assessed to elucidate the origin of the observed structures.
