TY - JOUR
T1 - Weak-lensing Analysis of the Complex Cluster Merger A746 with Subaru/Hyper Suprime-Cam
AU - HyeongHan, K.
AU - Cho, H.
AU - Jee, M. James
AU - Wittman, D.
AU - Cha, S.
AU - Lee, W.
AU - Finner, K.
AU - Rajpurohit, K.
AU - Brüggen, M.
AU - Forman, W.
AU - Jones, C.
AU - van Weeren, R.
AU - Botteon, A.
AU - Lovisari, L.
AU - Stroe, A.
AU - Domínguez-Fernández, P.
AU - O’Sullivan, E.
AU - Vrtilek, J.
N1 - Publisher Copyright:
© 2024. The Author(s). Published by the American Astronomical Society.
PY - 2024/2/1
Y1 - 2024/2/1
N2 - 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.
AB - 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.
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U2 - 10.3847/1538-4357/ad1bcc
DO - 10.3847/1538-4357/ad1bcc
M3 - Article
AN - SCOPUS:85184923513
SN - 0004-637X
VL - 962
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2
M1 - 100
ER -