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Witnessing a Galaxy Cluster Merger with JWST and a Chandra X-ray Temperature Map

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arxiv 2211.11991 v1 pith:2R52SQE4 submitted 2022-11-22 astro-ph.GA

Brian C. Alden , Jack O. Burns This is my paper
classification astro-ph.GA
keywords clusterjwsttemperaturex-raychandragalaxyimagelensing
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The first James Webb Space Telescope (JWST) image released was of galaxy cluster SMACSJ0723.3- 7327, a lensing cluster at z=0.39 showing detail only JWST can provide. While the majority of the focus has been on the brilliantly lensed galaxies at redshifts far beyond it, there is more to the story than it being just a lensing cluster. The Chandra X-ray temperature map tells a tale of a merging cluster with a significant subcluster leaving a wake in the intracluster medium (ICM). This paper presents a high fidelity temperature map of SMACSJ0723.3-7327 using adaptive circular binning, overlaid with the JWST image, showing clear signs of merger activity. As the ICM extends well past the boundaries of the JWST imagery, and no low-frequency radio observations are yet published, a fuller story of this cluster remains to be told. This new X-ray temperature map reveals new details of a moderately distant actively merging cluster.

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Cited by 2 Pith papers

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