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 Mρ=1.21±0.08 and MT=1.60±0.07, 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.
Cite
@article{arxiv.1904.08803,
title = {A merger shock in Abell 1367},
author = {Chong Ge and Ming Sun and Ruo-Yu Liu and Lawrence Rudnick and Craig Sarazin and William Forman and Christine Jones and Hao Chen and Wenhao Liu and Masafumi Yagi and Alessandro Boselli and Matteo Fossati and Giuseppe Gavazzi},
journal= {arXiv preprint arXiv:1904.08803},
year = {2019}
}