X‐ray observations of the merging cluster CIZA J2242.8+5301. Issue 4 (2nd May 2013)

• Record Type: Journal Article
• Authors: Ogrean, G.; Brüggen, M.; Simionescu, A.; Röttgering, H.; van Weeren, R.J.; Croston, J.H.; Hoeft, M.; Schartel, Norbert
• Is Part Of: Astronomische Nachrichten. Volume 334:Issue 4/5(2013)
• Page Start: 342
• Page End: 345
• Publication Date: 2013-05-02
• Subjects: Astronomy -- Periodicals; 520.5
• DOI: 10.1002/asna.201211853
• Languages: English
• ISSNs: 0004-6337

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Multiwavelength studies of radio relics at merger shocks set powerful constraints on the relics origin and formation mech‐anism. However, for X‐ray observations, a main difficulty is represented by the low X‐ray surface brightness far out in the cluster outskirts, where relics are typically found. Here, we present XMM‐<italic>Newton</italic> results from a 130‐ks observation of CIZA J2242.8+5301, a cluster at z = 0.19 that hosts a double radio relic. We focus on the well‐defined northern relic. There is a difference of ∼55% between the temperature we measure behind the relic, and the temperature measured with Suzaku. We analyse the reasons for this large discrepancy, and discuss the possibility of reliably measuring the temperature beyond the northern relic. (© 2013 WILEY‐VCH Verlag GmbH &amp; Co. KGaA, Weinheim)</p> </abstract>