AbstractThe global ion distributions extracted from ENA images measured by IMAGE/HENA can be used to calculate the plasma pressure. In principle, knowing the plasma-pressure distribution and the magnetic field, one can also calculate the three-dimensional current system that is driven by the pressure gradient. The currents depend on the pressure gradient and the magnetic-field strength. Assuming current continuity ( · J =0), we can use Euler potentials for J itself to calculate the current distribution. The method is applied to some pressure distributions measured by IMAGE/HENA and the resulting field-aligned currents (FACs) are compared to the global FAC maps derived from irridium magnetometer data.


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    Titel :

    Derivation of currents and diamagnetic effects from global plasma pressure distributions obtained by IMAGE/HENA


    Beteiligte:
    Roelof, E.C (Autor:in) / C:son Brandt, P (Autor:in) / Mitchell, D.G (Autor:in)

    Erschienen in:

    Advances in Space Research ; 33 , 5 ; 747-751


    Erscheinungsdatum :

    2003-03-13


    Format / Umfang :

    5 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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