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dc.contributor.authorEckert, D.
dc.contributor.authorJauzac, M.
dc.contributor.authorVazza, F.
dc.contributor.authorOwers, M.
dc.contributor.authorKneib, J.
dc.contributor.authorTchernin, C.
dc.contributor.authorIntema, Hubertus
dc.contributor.authorKnowles, K.
dc.date.accessioned2019-02-19T04:17:26Z
dc.date.available2019-02-19T04:17:26Z
dc.date.created2019-02-19T03:58:20Z
dc.date.issued2016
dc.identifier.citationEckert, D. and Jauzac, M. and Vazza, F. and Owers, M. and Kneib, J. and Tchernin, C. and Intema, H. et al. 2016. A shock front at the radio relic of Abell 2744. Monthly Notices of the Royal Astronomical Society. 461 (2): pp. 1302-1307.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/74604
dc.identifier.doi10.1093/mnras/stw1435
dc.description.abstract

Radio relics are Mpc-scale diffuse radio sources at the peripheries of galaxy clusters which are thought to trace outgoing merger shocks. We present XMM-Newton and Suzaku observations of the galaxy cluster Abell 2744 (z = 0.306), which reveal the presence of a shock front 1.5 Mpc east of the cluster core. The surface-brightness jump coincides with the position of a known radio relic. Although the surface-brightness jump indicates a weak shock with a Mach number M=1.7-0.3+0.5, the plasma in the post-shock region has been heated to a very high temperature (~13 keV) by the passage of the shock wave. The low-acceleration efficiency expected from such a weak shock suggests that mildly relativistic electrons have been re-accelerated by the passage of the shock front.

dc.publisherOxford University Press
dc.titleA shock front at the radio relic of Abell 2744
dc.typeJournal Article
dcterms.source.volume461
dcterms.source.number2
dcterms.source.startPage1302
dcterms.source.endPage1307
dcterms.source.issn0035-8711
dcterms.source.titleMonthly Notices of the Royal Astronomical Society
curtin.note

This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

curtin.accessStatusOpen access


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