{
  "abstract": "Magnetic reconnection between emerging magnetic flux and the ambient coronal field fundamentally drives solar jets. We use 3D resistive-MHD simulations of eruptive flux emergence to investigate how the large-scale current sheet formed at the interface fragments during recurrent jet activity. The simulations show that jet formation and current sheet disruption are coupled elements of a single multiscale process. The current structures developing along open field lines and within the jet are relatively weak, exhibiting a predominantly filamentary morphology. In contrast, the larger structures linked to the closed-field topology are noticeably stronger, and the eruptive development of the emerging flux further increases both their number and strength. The parallel-current distributions within the closed magnetic field lines region exhibit Gaussian central cores with pronounced non-Gaussian tails, implying a small subset of strong, intermittent structures. Magnetic spectra follow a power law with a Kolmogorov-like slope in the large-scale range, becoming much steeper in the small-scale range—consistent with reconnection-mediated magnetic structuring. Box-counting analysis shows that the strongest current structures have a fractal dimension D f ≃ 2, indicating a fragmented population of sheet-like coherent structures. Cluster analysis further reveals broad power-law distributions of cluster volumes and their Ohmic dissipation energies, with individual events reaching ∼10 ²⁰ –10 ²⁵ erg over their estimated lifetimes. These results demonstrate that eruptive flux emergence can self-consistently transform a global reconnecting current sheet into a localized, intermittent, sheet-dominated dissipative network, providing a natural environment for impulsive coronal heating and motivating future particle-acceleration studies.",
  "abstract_shown": true,
  "affiliations": [
    "University of Ioannina",
    "Aristotle University"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Vaggelis Karantanis",
      "orcid": "0009-0008-6993-203X"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Loukas Vlahos",
      "orcid": "0000-0002-8700-4172"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Heinz Isliker",
      "orcid": "0000-0001-9782-2294"
    },
    {
      "affs": [
        0
      ],
      "name": "Angelos Giannis",
      "orcid": "0009-0005-9065-2583"
    },
    {
      "affs": [
        0
      ],
      "name": "Vasilis Archontis",
      "orcid": "0000-0002-6926-8676"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0a07gw3g6vqeh.bib",
  "cited_by": 0,
  "doi": "10.3847/1538-4357/aeab92",
  "fulltext_url": null,
  "id": "0a07gw3g6vqeh",
  "issns": [
    "0004-637X",
    "1538-4357"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aeab92",
  "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": "W7214117952",
  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aeab92/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-26",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/0a07gw3g6vqeh.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:11Z",
      "native_id": "10.3847/1538-4357/aeab92",
      "source": "crossref",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/aeab92"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Solar and Space Plasma Dynamics",
      "subfield": "stellar"
    }
  ],
  "title": "Current Sheet Fragmentation in the Course of Repeated Eruptive Magnetic Flux Emergence",
  "title_text": "Current Sheet Fragmentation in the Course of Repeated Eruptive Magnetic Flux Emergence",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:11Z",
  "url": "https://research.draconitic.com/paper/0a07gw3g6vqeh",
  "venue": "The Astrophysical Journal",
  "versions": [
    {
      "doi": "10.48550/arxiv.2609.25480",
      "pid": "3j1mefnay05wx",
      "relation": "preprint",
      "title": "Current Sheet Fragmentation in the Course of Repeated Eruptive Magnetic Flux Emergence",
      "venue": "arXiv"
    }
  ]
}