A merger shock in Abell 1367

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

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)L36-L40
JournalMonthly Notices of the Royal Astronomical Society: Letters
Issue number1
StatePublished - Jun 1 2019

Bibliographical note

Funding Information:
Support for this work was provided by the NASA grant 80NSSC18K0606 and the NSF grant 1714764. Partial support for LR comes from NSF grant AST 17-14205 to the University of Minnesota. MF has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement no. 757535).

Publisher Copyright:
© 2019 The Author(s).


  • Galaxies: clusters: individual: abell 1367
  • Galaxies: clusters: intracluster medium
  • X-rays: galaxies: clusters


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