Yet another test of Radial Acceleration Relation for galaxy clusters
arXiv:2011.06421 · doi:10.1016/j.dark.2020.100765
Abstract
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. For both the samples, we find that the residual scatter is small (0.11-0.14 dex), although the best-fit values for the Chandra sample have large error bars. Therefore, we argue that at least one of these cluster samples (X-COP) obeys the radial acceleration relation. However, since the best-fit parameters are discrepant with each other as well as the previous estimates, we argue that the RAR is not universal. For both the catalogs, the acceleration scale, which we obtain is about an order of magnitude larger than that obtained for galaxies, and is agreement with both the recent estimates.
11 pages, 4 figures. Computed residual scatter for both the samples. Accepted for publication in Phys. Dark Universe
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- A Distinct Radial Acceleration Relation across Brightest Cluster Galaxies and Galaxy Clusters
- A model-independent test of the evolution of gas depletion factor for SPT-SZ and Planck ESZ clusters
- Mass-Velocity Dispersion Relation in MaNGA Brightest Cluster Galaxies
- Constraints on Self-Interacting dark matter from relaxed galaxy groups
- A test of linearity of the ratio of dark matter to baryonic matter in galaxy clusters
- A test of galaxy cluster fundamental plane for the X-COP sample
- The analytic radial acceleration relation for galaxy clusters
- On a Generalized Mass-Velocity Relation for Disk Galaxies and Galaxy Clusters
- Examining Baryonic Faber-Jackson Relation in Galaxy Groups