# A merger shock in Abell 1367

## TL;DR

This paper reports the discovery of a merger shock in Abell 1367 using X-ray and radio observations, revealing insights into cluster dynamics and particle acceleration processes.

## Contribution

It presents the first detection of a merger shock in Abell 1367 and links it to a radio relic, highlighting shock re-acceleration of electrons from star-forming galaxies.

## Key findings

- Shock Mach number estimated at ~1.2-1.6
- Radio relic coincides with shock region
- Seed electrons likely originate from star-forming galaxies

## Abstract

Multi-wavelength observations show that Abell 1367 (A1367) is a dynamically young cluster, with at least two subclusters merging along the SE-NW direction. With the wide-field XMM-Newton mosaic of A1367, we discover a previously unknown merger shock at the NW edge of the cluster. We estimate the shock Mach number from the density and temperature jumps as $M_{\rho}=1.21\pm0.08$ and $M_T=1.60\pm0.07$, respectively. This shock region also corresponds to a radio relic discovered with the VLA and GBT, which could be produced by the shock re-acceleration of pre-existing seed relativistic electrons. We suggest that some of the seed relativistic electrons originate from late-type, star-forming galaxies in this region.