Weak-lensing Analysis of the Complex Cluster Merger A746 with Subaru/Hyper Suprime-Cam

Journal
Date Issued
2024
Author(s)
HyeongHan, K.
•
Cho, H.
•
Jee, M. James
•
Wittman, D.
•
Cha, S.
•
Lee, W.
•
Finner, K.
•
Rajpurohit, K.
•
Brüggen, M.
•
Forman, W.
•
Jones, C.
•
van Weeren, R.
•
•
•
Stroe, A.
•
Domínguez-Fernández, P.
•
O'Sullivan, E.
•
Vrtilek, J.
DOI
Abstract
The galaxy cluster A746 (z = 0.214), featuring a double radio relic system, two isolated radio relics, a possible radio halo, disturbed V-shaped X-ray emission, and intricate galaxy distributions, is a unique and complex merging system. We present a weak-lensing analysis of A746 based on wide-field imaging data from Subaru/Hyper Suprime-Cam observations. The mass distribution is characterized by a main peak, which coincides with the center of the X-ray emission. At this main peak, we detect two extensions toward the north and west tracing the cluster galaxy and X-ray distributions. Despite the ongoing merger, our estimate of the A746 global mass M 500 = 4.4 ± 1.0 × 1014 M ⊙ is consistent with the previous results from Sunyaev-Zel'dovich and X-ray observations. We conclude that reconciling the distributions of mass, galaxies, and intracluster medium with the double radio relic system and other radio features remains challenging....
Volume
962
Issue
2
Start page
100
Uri
Url
Issn Identifier
0004-637X
Rights
open.access
File(s)
Loading...
Thumbnail Image
Name

HyeongHan_2024_ApJ_962_100.pdf

Description
Pdf editoriale
Size

1.61 MB

Format

Adobe PDF

Checksum (MD5)

c817fc851493937e4ad92a91f63fccdc