We present a 23deg$^2$ weak gravitational lensing survey of the Shapley supercluster core and its surroundings using $gri$ VST images as part of the Shapley Supercluster Survey (ShaSS). This study reveals the overall matter distribution over a region containing 11 clusters at $z{\sim}0.048$ that are all interconnected, as well as several ongoing cluster-cluster interactions. Galaxy shapes have been measured by using the Kaiser-Squires-Broadhurst method for the $g$- and $r$-band images and background galaxies were selected via the $gri$ colour-colour diagram. This technique has allowed us to detect all of the clusters, either in the $g$-band or $r$-band images, although at different $σ$ levels, indicating that the underlying dark matter distribution is tightly correlated with the number density of the member galaxies. The deeper $r$-band images have traced the five interacting clusters in the supercluster core as a single coherent structure, confirmed the presence of a filament extending North from the core, and have revealed a background cluster at $z{\sim}0.17$. We have measured the masses of the four richest clusters (A3556, A3558, A3560 and A3562) in the two-dimensional shear pattern, assuming a spherical Navarro-Frenk-White (NFW) profile and obtaining a total mass of $\mathcal{M}_{\rm
ShaSS,WL}{=}1.56^{+0.81}_{-0.55}{\times}10^{15\,}{\rm
M}_{\odot}$, which is consistent with dynamical and X-ray studies. Our analysis provides further evidence of the ongoing dynamical evolution in the ShaSS region.
Magnetic Fields in the Shapley Supercluster Core with POSSUM: Challenging Model Predictions
Universidad Complutense de Madrid（马德里康普顿斯大学）；Università degli Studi di Bologna（博洛尼亚大学）；INAF – Istituto di Radioastronomia（意大利国家天体物理研究所射电天文研究所）；The University of Chicago（芝加哥大学）；Dunlap Institute for Astronomy and Astrophysics, University of Toronto（多伦多大学邓普勒天文学与天体物理研究所）；The Australian National University（澳大利亚国立大学）；National Research Council Canada, Herzberg Research Centre for Astronomy and Astrophysics（加拿大国家研究委员会赫茨伯格天文学与天体物理研究中心）
The Weighing Halos Accurately, Locally, and Efficiently with Supernovae (WHALES) Survey Overview and Initial Data Release
Duke University（杜克大学）；University of Michigan（密歇根大学）；Aix Marseille Univ, CNRS/IN2P3, CPPM（艾克斯马赛大学，法国国家科学研究中心/欧洲核子研究组织粒子物理中心）；The Australian National University（澳大利亚国立大学）；Space Telescope Science Institute（太空望远镜科学研究所）；Johns Hopkins University（约翰斯·霍普金斯大学）
Cosmic dance in the Shapley Concentration Core II. The uGMRT-MeerKAT view of filaments in the brightest cluster galaxies and tailed radio galaxies in the A3528 cluster complex
本文利用 uGMRT 和 MeerKAT 射电观测结合 eROSITA X 射线数据，研究沙普利超星系团核心 A3528 复合体，发现最亮团星系周围存在谱指数极陡的弥散射电纤维，并提出小型并合可重新加速射电星系等离子体。
