{
  "abstract": "The diagnostic of the green coronal emission line at Fe XIV 5303 Å is very suited for studying the physical conditions and dynamics of the solar corona. The Visible Emission Line Coronagraph (VELC) on board Aditya-L1 has the facility to make spectroscopic observations of this emission line both in raster-scan and sit-and-stare modes. To obtain reliable physical parameters, we have developed a data-processing pipeline that derives the emission peak intensity, line width (full width at half-maximum, FWHM), Doppler velocity, and their associated uncertainties. The data pipeline includes dark subtraction, flat-field correction, spectral curvature correction, spectral drift correction, compensation for filter transmission effects, removal of blending due to an absorption line at the edge of the emission profile, and Gaussian fitting to the corrected emission profile. Instrumental broadening is removed from the observed line width to determine the intrinsic emission-line width. The final outputs—peak intensity, line width, and Doppler velocity—are stored as multilayer FITS cubes containing parameter maps and corresponding uncertainty maps, along with updated header metadata. In this paper, we describe the complete methodology and calibration procedures used in the pipeline. The resulting data products are suitable for coronal diagnostics, Doppler flow measurements, and investigations of temporal and spatial evolution of coronal structures.",
  "abstract_shown": true,
  "affiliations": [
    "Indian Institute of Astrophysics"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "V. Muthu Priyal",
      "orcid": "0000-0001-6093-3302"
    },
    {
      "affs": [
        0
      ],
      "name": "Jagdev Singh",
      "orcid": "0000-0003-0562-2979"
    },
    {
      "affs": [
        0
      ],
      "name": "R. Ramesh",
      "orcid": "0000-0003-2651-0204"
    },
    {
      "affs": [
        0
      ],
      "name": "P. Savarimuthu"
    },
    {
      "affs": [
        0
      ],
      "name": "S. Nagashree"
    },
    {
      "affs": [
        0
      ],
      "name": "E. Yuvashree"
    },
    {
      "affs": [
        0
      ],
      "name": "K. Sasikumar Raja",
      "orcid": "0000-0002-1192-1804"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2qahy6kf7bnsm.bib",
  "cited_by": 0,
  "doi": "10.3847/1538-4365/aea576",
  "fulltext_url": null,
  "id": "2qahy6kf7bnsm",
  "issns": [
    "0067-0049",
    "1538-4365"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-4365/aea576",
  "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": [
    [
      "openalex",
      "3103|Solar and Space Plasma Dynamics"
    ]
  ],
  "openalex": "W7222218648",
  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-4365/aea576/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-16",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/2qahy6kf7bnsm.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:15Z",
      "native_id": "10.3847/1538-4365/aea576",
      "source": "crossref",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4365/aea576"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Solar and Space Plasma Dynamics",
      "subfield": "stellar"
    }
  ],
  "title": "Analysis of Aditya-L1/VELC [Fe XIV ] 5303 Å Spectroscopic Observations of the Solar Corona: Development of a Data-processing Pipeline",
  "title_text": "Analysis of Aditya-L1/VELC [Fe XIV ] 5303 Å Spectroscopic Observations of the Solar Corona: Development of a Data-processing Pipeline",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:15Z",
  "url": "https://research.draconitic.com/paper/2qahy6kf7bnsm",
  "venue": "The Astrophysical Journal Supplement Series",
  "versions": []
}