{
  "abstract": "Two-dimensional (2D) coronal seismology based on coronagraphic imaging spectroscopy has emerged as a promising method for mapping the coronal magnetic field, but the physical meaning of its inferred quantities under optically thin line-of-sight (LOS) integration remains uncertain. We investigate this problem by synthesizing coronagraphic observables from a global wave-driven magnetohydrodynamic model with a long LOS extent and a structured corona and by applying the same analysis procedures used for observations. We compare the diagnosed density, wave propagation direction, phase speed, and magnetic-field strength with different LOS-weighted reference quantities from the model. We find that the measured density and the wave propagation direction are both well represented by LOS emissivity-weighted quantities. In contrast, the phase speed is not controlled by emissivity weighting alone: the LOS distribution of wave velocity amplitude also plays an important role. As a result, the inferred magnetic field is better represented by combining the emissivity-weighted density with an amplitude-dependent effective speed. Emissivity weighting nevertheless remains a reasonable approximation, and a useful baseline, over much of the field of view, especially where the LOS does not cross strongly structured plasma-sheet-like regions. These results clarify the physical interpretation of 2D coronal seismology and provide guidance for future coronal magnetic-field tomography and model-constrained applications.",
  "abstract_shown": true,
  "affiliations": [
    "National Center for Atmospheric Research"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Zihao 子浩 Yang 杨",
      "orcid": "0000-0002-4973-0018"
    },
    {
      "affs": [
        0
      ],
      "name": "Yuhong Fan",
      "orcid": "0000-0003-1027-0795"
    },
    {
      "affs": [
        0
      ],
      "name": "Giuliana de Toma",
      "orcid": "0000-0002-8439-6166"
    },
    {
      "affs": [
        0
      ],
      "name": "Sarah Gibson",
      "orcid": "0000-0001-9831-2640"
    },
    {
      "affs": [
        0
      ],
      "name": "Matthias Rempel",
      "orcid": "0000-0001-5850-3119"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cjnwaxkqaph8k.bib",
  "cited_by": 0,
  "doi": "10.3847/1538-4357/aeb2f6",
  "fulltext_url": null,
  "id": "cjnwaxkqaph8k",
  "issns": [
    "1538-4357",
    "0004-637X"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aeb2f6",
  "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/aeb2f6/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-06",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/cjnwaxkqaph8k.ris",
  "sources": [
    {
      "first_seen": "2026-11-06T06:20:02Z",
      "native_id": "10.3847/1538-4357/aeb2f6",
      "source": "feed-iop",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/aeb2f6"
    },
    {
      "first_seen": "2026-11-06T12:20:52Z",
      "native_id": "10.3847/1538-4357/aeb2f6",
      "source": "crossref",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/aeb2f6"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "journal-openalex:3103|Stellar, planetary, and galactic studies",
      "subfield": "stellar"
    }
  ],
  "title": "What Does 2D Coronal Seismology Measure?",
  "title_text": "What Does 2D Coronal Seismology Measure?",
  "type": "peer-reviewed",
  "updated_at": "2026-11-08T00:21:13Z",
  "url": "https://research.draconitic.com/paper/cjnwaxkqaph8k",
  "venue": "The Astrophysical Journal",
  "versions": []
}