• Login
     
    View Item 
    •   ORFEO Home
    • Royal Belgian Institute for Space Aeronomy
    • BIRA-IASB publications
    • View Item
    •   ORFEO Home
    • Royal Belgian Institute for Space Aeronomy
    • BIRA-IASB publications
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Comparative simulations of Kelvin-Helmholtz induced magnetic reconnection at the Earth's magnetospheric flanks

    View/Open
    Ferro(2024a).pdf (2.504Mb)
    Authors
    Ferro, S.
    Faganello, M.
    Califano, F.
    Bacchini, F.
    Show allShow less
    Discipline
    Physical sciences
    Subject
    Magnetohydrodynamics
    Magnetoplasma
    Magnetosphere
    Plasma diagnostics
    Shear flow
    Comparative simulation
    Current sheets
    Earth magnetospheric
    Hall magnetohydrodynamic simulations
    High Latitudes
    Kelvin- helmholtz instabilities
    Kelvin-Helmholtz
    Magnetic reconnections
    Magnetic shear
    Midlatitudes
    Vortex flow
    Audience
    Scientific
    Date
    2024
    Metadata
    Show full item record
    Description
    This study presents three-dimensional (3D) resistive Hall-magnetohydrodynamic simulations of the Kelvin-Helmholtz instability (KHI) dynamics at Earth's magnetospheric flanks during northward interplanetary magnetic field periods. By comparing two simulations with and without initial magnetic shear, we analyze the impact of distinct magnetic field orientations on plasma dynamics and magnetic reconnection events taking into account 3D mechanisms, such as KHI high latitude stabilization. The identical nature of the simulations, except for the presence/absence of an initial magnetic shear, enables, for the first time, a complete and coherent comparative analysis of the latitudinal distribution of KH vortices, current sheets, reconnection events, and the evolution of the mixing layer. In one configuration, a uniform magnetic field leads to double mid-latitude reconnection (MLR), while in the other, magnetic shear induces both type I vortex-induced reconnection (VIR) and MLR. Notably, the type I VIR observed in this second scenario results from the combined action of line advection and vortex-induced current sheet pinching (the classic mechanism driving two-dimensional type I VIR). Of particular importance is our quantification of newly closed field lines that experienced double reconnection, ultimately becoming embedded in solar wind plasma at low latitudes while remaining connected to magnetospheric plasma at high latitudes. The varying abundance of such lines in the two simulations holds implications for plasma transport at the magnetopause.
    Citation
    Ferro, S.; Faganello, M.; Califano, F.; Bacchini, F. (2024). Comparative simulations of Kelvin-Helmholtz induced magnetic reconnection at the Earth's magnetospheric flanks. , Physics of Plasmas, Vol. 31, Issue 5, DOI: 10.1063/5.0191674.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/14029
    doi: http://dx.doi.org/10.1063/5.0191674
    url:
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
    NewsHelpdeskBELSPO OA Policy

    Browse

    All of ORFEOCommunities & CollectionsBy Issue DateAuthorsTitlesDisciplinesThis CollectionBy Issue DateAuthorsTitlesDisciplines
     

    DSpace software copyright © 2002-2016  DuraSpace
    Send Feedback | Cookie Information
    Theme by 
    Atmire NV