{
  "abstract": "We investigate the radial evolution of solar wind turbulence using remote-sensing brightness observations from the Solar Terrestrial Relations Observatory (STEREO) and the first science-ready images from the Polarimeter to Unify the Corona and Heliosphere (PUNCH) mission. Exploiting the combined wide fields of view of STEREO’s COR2 coronagraph (4-9 r⊙) and PUNCH’s Wide Field Imager (WFI, 21-50 r⊙), we track the radial evolution of the power spectral density and correlation scale of density fluctuations from 4 to 50 r⊙. Line-of-sight integration systematically steepens the “usual” turbulence scaling laws by a constant offset of about −0.5 across all resolved scales, so that the energy-containing range (nominally k−1) and the inertial range (nominally k−5/3) appear as k−1.5 and k−2.1, respectively – consistent with previous synthetic-image simulations. The correlation scale increases with heliocentric distance across the full range of heliodistances probed, in accordance with previous theoretical models and observations at closer distances from the Sun.",
  "abstract_shown": true,
  "affiliations": [
    "University of Delaware Department of Physics and Astronomy, , Newark, DE ,",
    "INAF – Institute for Space Astrophysics and Planetology , Rome ,",
    "Università della Calabria Dipartimento di Fisica, , Rende ,",
    "NASA Goddard Space Flight Center , Greenbelt, MD ,",
    "Southwest Research Institute , Boulder, CO ,",
    "National Center for Atmospheric Research / High Altitude Observatory , Boulder, CO ,",
    "Naval Research Laboratory , Washington, DC ,",
    "Southwest Research Institute , San Antonio, TX ,",
    "United Kingdom Research & Innovation / Science & Technology Facilities Council / Rutherford Appleton Laboratory , Harwell Campus, Oxfordshire ,"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 24,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "F Pecora"
    },
    {
      "affs": [
        2
      ],
      "name": "G Nisticò"
    },
    {
      "affs": [
        0,
        3
      ],
      "name": "R Chhiber",
      "orcid": "0000-0002-7174-6948"
    },
    {
      "affs": [
        0
      ],
      "name": "Y Yang"
    },
    {
      "affs": [
        0
      ],
      "name": "S Adhikari"
    },
    {
      "affs": [
        0
      ],
      "name": "J Wang"
    },
    {
      "affs": [
        4
      ],
      "name": "R Patel"
    },
    {
      "affs": [
        0
      ],
      "name": "Z Gao"
    },
    {
      "affs": [
        4
      ],
      "name": "C DeForest"
    },
    {
      "affs": [
        5
      ],
      "name": "S E Gibson"
    },
    {
      "affs": [
        3
      ],
      "name": "N Viall"
    },
    {
      "affs": [
        4
      ],
      "name": "M N Beasley"
    },
    {
      "affs": [
        6
      ],
      "name": "R C Colaninno"
    },
    {
      "affs": [
        4
      ],
      "name": "J M Hughes"
    },
    {
      "affs": [
        7
      ],
      "name": "R Killough"
    },
    {
      "affs": [
        4
      ],
      "name": "D A Lamb"
    },
    {
      "affs": [
        4
      ],
      "name": "G T Laurent"
    },
    {
      "affs": [
        4
      ],
      "name": "C Lowder"
    },
    {
      "affs": [
        4
      ],
      "name": "J Redfern"
    },
    {
      "affs": [
        4
      ],
      "name": "D B Seaton"
    },
    {
      "affs": [
        4
      ],
      "name": "S Van Kooten"
    },
    {
      "affs": [
        8
      ],
      "name": "N R Waltham"
    },
    {
      "affs": [
        7
      ],
      "name": "W L Wells"
    },
    {
      "affs": [
        0
      ],
      "name": "W H Matthaeus",
      "orcid": "0000-0001-7224-6024"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/an2vte4pjxst0.bib",
  "cited_by": 0,
  "doi": "10.1093/mnras/stag2115",
  "fulltext_url": null,
  "id": "an2vte4pjxst0",
  "issns": [
    "0035-8711",
    "1365-2966"
  ],
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  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
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  "pdf_url": "https://academic.oup.com/mnras/advance-article-pdf/doi/10.1093/mnras/stag2115/73135206/stag2115.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-05",
  "publisher": "Oxford University Press (OUP)",
  "ris": "https://research.draconitic.com/paper/an2vte4pjxst0.ris",
  "sources": [
    {
      "first_seen": "2026-11-06T00:21:01Z",
      "native_id": "10.1093/mnras/stag2115",
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    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "journal-openalex:3103|Stellar, planetary, and galactic studies",
      "subfield": "stellar"
    }
  ],
  "title": "Solar Wind Turbulence Spectra and Correlation Scale from 4 to 50 r ⊙: STEREO and PUNCH Observations",
  "title_text": "Solar Wind Turbulence Spectra and Correlation Scale from 4 to 50 r ⊙: STEREO and PUNCH Observations",
  "type": "peer-reviewed",
  "updated_at": "2026-11-06T00:21:01Z",
  "url": "https://research.draconitic.com/paper/an2vte4pjxst0",
  "venue": "Monthly Notices of the Royal Astronomical Society",
  "versions": []
}