- Observation of super-Alfvénic slippage of reconnecting magnetic field…
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Observation of super-Alfvénic slippage of reconnecting magnetic field lines on the Sun

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    SYSNO ASEP0619721
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleObservation of super-Alfvénic slippage of reconnecting magnetic field lines on the Sun
    Author(s) Lörinčík, J. (US)
    Dudík, Jaroslav (ASU-R) RID, ORCID
    Sainz Dalda, A. (US)
    Aulanier, G. (FR)
    Polito, V. (US)
    de Pontieu, B. (US)
    Source TitleNature Astronomy. - : Nature Publishing Group - ISSN 2397-3366
    Roč. 9, č. 1 (2025), s. 45-54
    Number of pages17 s.
    Publication formOnline - E
    Languageeng - English
    CountryUS - United States
    Keywordsmagnetic reconnection ; slip-running reconnection ; slipping motion ; solar flares ; IRIS observations
    OECD categoryAstronomy (including astrophysics,space science)
    R&D ProjectsGA20-07908S GA ČR - Czech Science Foundation (CSF)
    Method of publishingOpen access
    Institutional supportASU-R - RVO:67985815
    UT WOS001337901800001
    EID SCOPUS85207005857
    DOI https://doi.org/10.1038/s41550-024-02396-4
    AnnotationSlipping motions of magnetic field lines are a distinct signature of three-dimensional magnetic reconnection, a fundamental process driving solar and stellar flares. While being a key prediction of numerical experiments, the rapid super-Alfvénic field line slippage driven by the ‘slip-running’ reconnection has remained elusive in previous observations. New frontiers into exploring transient flare phenomena were introduced by recently designed high cadence observing programs of the Interface Region Imaging Spectrograph (IRIS). By exploiting high temporal resolution imagery (~2 s) of IRIS, here we reveal slipping motions of flare kernels at speeds reaching thousands of kilometres per second. The fast kernel motions are direct evidence of slip-running reconnection in quasi-separatrix layers, regions where magnetic field strongly changes its connectivity. Our results provide observational proof of theoretical predictions unaddressed for nearly two decades and extend the range of magnetic field configurations where reconnection-related phenomena can occur.
    WorkplaceAstronomical Institute
    ContactAnežka Melichárková, bibl@asu.cas.cz, Tel.: 323 620 326
    Year of Publishing2026
    Electronic addresshttps://hdl.handle.net/11104/0366361
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