Abell 370: A Cluster with a Pronounced Triaxial Morphology

Abstract

We here combine Sunyaev-Zel'dovich effect, X-ray observations and spectroscopic redshifts of member galaxies, to constrain the intrinsic three-dimensional shape of the galaxy cluster: Abell 370. The cluster turns out to be strongly elongated along the l.o.s., with two (or more) substructures in the process of merging. Spectroscopy further suggests that the process must be taking place at a small angle respect to the l.o.s.

arXiv comment7 pages, 2 figures. Contribution to the Proceedings of the COSPAR Scientific Assembly, E1.2 "Clusters of Galaxies: New Insights from XMM-Newton, Chandra and INTEGRAL", Paris (France), July 19-20, 2004. Accepted for publication in Advances in Space Research

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• The Sunyaev-Zel'dovich Effect
• Determining the Cosmic Distance Scale from Interferometric Measurements of the Sunyaev-Zel'dovich Effect
• Measuring the Three-Dimensional Structure of Galaxy Clusters. I. Application to a Sample of 25 Clusters
• AC 114: a cluster with a soft X-ray tail
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• Closing the Loop: A Self-Consistent Model of Optical, X-ray, and SZ Scaling Relations for Clusters of Galaxies
• Systematic vs. Statistical Uncertainties in Masses and Magnifications of the Hubble Frontier Fields
• Exploring Effects on Magnifications due to Line-of-Sight Galaxies in the Hubble Frontier Fields
• The intracluster light on Frontier Fields clusters Abell 370 and Abell S1063
• Cluster Geometry & Inclinations from Deprojection Uncertainties