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A merger shock in Abell 1367

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.
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Contributor : Alessandro Boselli Connect in order to contact the contributor
Submitted on : Tuesday, July 5, 2022 - 11:08:32 AM
Last modification on : Tuesday, July 5, 2022 - 11:08:36 AM


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Chong Ge, Ming Sun, Ruo-Yu Liu, Lawrence Rudnick, Craig Sarazin, et al.. A merger shock in Abell 1367. Monthly Notices of the Royal Astronomical Society: Letters, Oxford Journals, 2019, 486 (1), pp.L36-L40. ⟨10.1093/mnrasl/slz049⟩. ⟨hal-02347220⟩



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