{
  "abstract": "Weak gravitational lensing offers a direct probe of the projected dark matter distribution in cluster-scale structures and the surrounding cosmic web. We investigate the capability of the China Space Station Telescope (CSST) to recover nonspherical dark matter morphologies using mock reduced-shear maps generated from cosmological N-body simulations. We apply the deep-learning-based MIU ² Net mass-reconstruction framework to CSST-like wide- and deep-field source densities, focusing on two representative systems: filament-connected halo pairs and elongated halos. MIU ² Net accurately recovers halo centers, elongated mass distributions, and the filamentary structures connecting halo pairs in both survey configurations. Halo centers are localized within about 0.1 h ⁻¹ Mpc, and elongated-halo shapes and orientations are reliably recovered. Filament paths are stable against shape noise, with mean normalized instability parameters I F , defined as the mean deviation from the true filament locus in units of R ₂₀₀ , decreasing from 0.041–0.037 in the low-redshift bin and from 0.051–0.045 in the high-redshift bin from the wide to deep field. The recovered filament shapes remain consistent with the true maps at the percent level. Compared with conventional Kaiser–Squires reconstruction, MIU ² Net better preserves low-contrast anisotropic structures while suppressing small-scale noise. These results demonstrate that CSST weak-lensing data, combined with machine-learning-based mass reconstruction, will enable statistical studies of cluster assembly, anisotropic matter accretion, and the connection between massive halos and the filamentary cosmic web.",
  "abstract_shown": true,
  "affiliations": [
    "Chinese Academy of Sciences",
    "University of Chinese Academy of Science",
    "Beijing Normal University",
    "Yunnan University",
    "Shanghai Astronomical Observatory (SHAO)",
    "University of Chinese Academy of Sciences"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 9,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Xinyue Chen",
      "orcid": "0009-0009-8953-1839"
    },
    {
      "affs": [
        1,
        2
      ],
      "name": "Ran Li",
      "orcid": "0000-0003-3899-0612"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Qiao Wang"
    },
    {
      "affs": [
        0
      ],
      "name": "Hengjie Lin"
    },
    {
      "affs": [
        1,
        2
      ],
      "name": "Liang Gao"
    },
    {
      "affs": [
        3
      ],
      "name": "Xiangkun Liu"
    },
    {
      "affs": [
        4,
        0,
        5
      ],
      "name": "Huanyuan Shan",
      "orcid": "0000-0001-8534-837X"
    },
    {
      "affs": [
        4,
        5
      ],
      "name": "Ji Yao",
      "orcid": "0000-0002-7336-2796"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Ming Li",
      "orcid": "0000-0002-1318-4828"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2jych6f2gwc32.bib",
  "cited_by": 0,
  "doi": "10.3847/1538-4357/aeb2fd",
  "fulltext_url": null,
  "id": "2jych6f2gwc32",
  "issns": [
    "1538-4357",
    "0004-637X"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aeb2fd",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "feed-journal",
      "astronomy/general"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aeb2fd/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-02",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/2jych6f2gwc32.ris",
  "sources": [
    {
      "first_seen": "2026-11-02T12:20:43Z",
      "native_id": "10.3847/1538-4357/aeb2fd",
      "source": "feed-iop",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/aeb2fd"
    },
    {
      "first_seen": "2026-11-02T12:21:56Z",
      "native_id": "10.3847/1538-4357/aeb2fd",
      "source": "crossref",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/aeb2fd"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "journal-openalex:3103|Stellar, planetary, and galactic studies",
      "subfield": "stellar"
    }
  ],
  "title": "Mapping Dark Matter in Merging Clusters with Weak Lensing for CSST: Morphology and Filament Recovery",
  "title_text": "Mapping Dark Matter in Merging Clusters with Weak Lensing for CSST: Morphology and Filament Recovery",
  "type": "peer-reviewed",
  "updated_at": "2026-11-04T00:22:41Z",
  "url": "https://research.draconitic.com/paper/2jych6f2gwc32",
  "venue": "The Astrophysical Journal",
  "versions": []
}