Yet another test of Radial Acceleration Relation for galaxy clusters.

2020 
We carry out a test of the radial acceleration relation (RAR) for galaxy clusters from two different catalogs compiled in literature, as an independent cross-check of two recent analyses, which reached opposite conclusions. The datasets we considered include a Chandra sample of 12 clusters and the X-COP sample of 12 clusters. We find that for both these samples, either the intrinsic scatter is large (X-COP sample) or a definitive conclusion cannot be drawn because of large errors in the fits (Chandra sample). Therefore, we do not find any evidence from our analysis for the radial acceleration relation with a tight intrinsic scatter for these cluster samples. For both the catalogs however, the acceleration scale we obtain is about an order of magnitude larger than that obtained for galaxies, and is agreement with both the recent estimates.
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