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arxiv: 1911.03101 · v1 · pith:YNSJWS7Gnew · submitted 2019-11-08 · 🌌 astro-ph.CO

Mapping the gas thermodynamic properties of the massive cluster merger MOO J1142+1527 at z = 1.2

classification 🌌 astro-ph.CO
keywords analysisclusterj1142propertiesx-raychandradataentropy
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We present the results of the analysis of the very massive cluster MOO J1142$+$1527 at a redshift $z = 1.2$ based on high angular resolution NIKA2 Sunyaev-Zel'dovich (SZ) and $Chandra$ X-ray data. This multi-wavelength analysis enables us to estimate the shape of the temperature profile with unprecedented precision at this redshift and to obtain a map of the gas entropy distribution averaged along the line of sight. The comparison between the cluster morphological properties observed in the NIKA2 and $Chandra$ maps together with the analysis of the entropy map allows us to conclude that MOO J1142$+$1527 is an on-going merger hosting a cool-core at the position of the X-ray peak. This work demonstrates how the addition of spatially-resolved SZ observations to low signal-to-noise X-ray data can bring valuable insights on the intracluster medium thermodynamic properties at $z>1$.

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