X-ray merger shock and radio relic in Abell 1367

Abell 1367 is a dynamically young galaxy cluster with at least two subclusters merging along the SE-NW direction. With the wide-field XMM-Newton mosaic, we discover a previously unknown merger shock at the NW edge of the cluster. This shock region also corresponds to a radio relic, which could be produced by the shock re-acceleration of pre-existing relativistic seed electrons. We suggest that some of the relativistic seed electrons originate from late-type, star-forming galaxies through stripping. We expect mergers in spiral-rich galaxy groups or proto-clusters to also generate radio relics in these systems.