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The galaxy cluster Abell 746 (A746; $z$=0.214), featuring a double radiorelic system, two isolated radio relics, a possible radio halo, disturbedV-shaped X-ray emission, and intricate galaxy distributions, is a unique andcomplex merging system. We present a weak-lensing analysis of A746 based onwide-field imaging data from Subaru/Hyper Suprime-Cam observations. The massdistribution is characterized by a main peak which coincides with the center ofthe X-ray emission. At this main peak, we detect two extensions toward thenorth and west, tracing the cluster galaxy and X-ray distributions. Despite theongoing merger, our estimate of the A746 global mass$M_{500}=4.4\pm1.0\times10^{14}~M_{\odot}$ is consistent with the previousresults from SZ and X-ray observations. We conclude that reconciling thedistributions of mass, galaxies, and intracluster medium with the double radiorelic system and other radio features remains challenging.

Weak-Lensing Analysis of the Complex Cluster Merger Abell 746 with Subaru/Hyper Suprime-Cam