A merger shock in Abell 1367

Ge, Chong; Sun, Ming; Liu, Ruo-Yu; Rudnick, Lawrence; Sarazin, Craig; Forman, William; Jones, Christine; Chen, Hao; Liu, Wenhao; Yagi, Masafumi; Boselli, Alessandro; Fossati, Matteo; Gavazzi, Giuseppe

Abstract

Multiwavelength 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.

Citation

Ge, C., Sun, M., Liu, R.-Y., Rudnick, L., Sarazin, C., Forman, W., Jones, C., Chen, H., Liu, W., Yagi, M., Boselli, A., Fossati, M., & Gavazzi, G. (2019). A merger shock in Abell 1367. Monthly Notices of the Royal Astronomical Society: Letters, 486(1), L36-L40. https://doi.org/10.1093/mnrasl/slz049

• Journal Article Type: Article
• Acceptance Date: Apr 4, 2019
• Online Publication Date: Apr 27, 2019
• Publication Date: Jun 30, 2019
• Deposit Date: Jul 3, 2019
• Publicly Available Date: Jul 3, 2019
• Journal: Monthly Notices of the Royal Astronomical Society: Letters
• Electronic ISSN: 1745-3933
• Publisher: Oxford University Press
• Peer Reviewed: Peer Reviewed
• Volume: 486
• Issue: 1
• Pages: L36-L40
• DOI: https://doi.org/10.1093/mnrasl/slz049
• Public URL: https://durham-repository.worktribe.com/output/1327683