Deep Chandra observations of merging galaxy cluster ZwCl 2341+0000
X. Zhang, A. Simionescu, C. Stuardi, R. J. van Weeren, H. T. Intema,, H. Akamatsu, J. de Plaa, J. S. Kaastra, A. Bonafede, M. Br\"uggen, J. ZuHone,, Y. Ichinohe

TL;DR
Deep Chandra observations of ZwCl 2341+0000 reveal complex shock and cold front features, including a partial shock-relic connection, a conic subcluster shape, and gas stripping phenomena, advancing understanding of merging galaxy cluster dynamics.
Contribution
This study provides the first detailed observation of a conic-shaped subcluster and associated cold front, and refines shock Mach numbers in a merging galaxy cluster.
Findings
Partial shock-relic connection clarified with deeper X-ray data.
First observation of a conic-shaped subcluster with a gas trail.
Updated radio shock Mach numbers and identified cold front features.
Abstract
Knowledge of X-ray shock and radio relic connection in merging galaxy clusters has been greatly extended in terms of both observation and theory over the last decade. ZwCl 2341+0000 is a double-relic merging galaxy cluster; previous studies have shown that half of the S relic is associated with an X-ray surface brightness discontinuity, while the other half not. The discontinuity was believed to be a shock front. Therefore, it is a mysterious case of an only partial shock-relic connection. By using the 206.5 ks deep Chandra observations, we aim to investigate the nature of the S discontinuity. Meanwhile, we aim to explore new morphological and thermodynamical features. In addition, we utilize the GMRT and JVLA images to compute radio spectral index (SI) maps. In the deep observations, the previously reported S surface brightness discontinuity is better described as a sharp change in…
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Taxonomy
TopicsGalaxies: Formation, Evolution, Phenomena · Astrophysical Phenomena and Observations · Astronomy and Astrophysical Research
