Results of 2D plasma simulations are presented and related to auroral observations. The formation of V-shaped potentials is studied with a 2 1/2 dimensional electrostatic particle-in-cell code for a magnetized plasma. It is shown that amplitudes for perpendicular electric fields are larger than for parallel electric fields, and for Te less than 100 eV, the amplitudes are comparable to the electric fields associated with the electrostatic shocks observed from the S3-3 satellite. The excitation of electrostatic ion-cyclotron EIC waves which occurs in the region below the parallel potential drop is discussed. In auroral plasmas EIC waves are observed above the V-shaped double layers in association with ion beams and field-aligned currents. The results also show that oppositely directed electric fields in the center and at the edges of the simulation region produce oppositely directed currents. Precipitating auroral ions in association with electron inverted-V events are seen by the DMSP-F6 satellite.


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    Titel :

    Some features of auroral electric fields as seen in 2D numerical simulations


    Beteiligte:
    Thiemann, H. (Autor:in) / Singh, N. (Autor:in) / Schunk, R. W. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.01.1984



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Some features of auroral electric fields as seen in 2D numerical simulations

    Thiemann, H. / Singh, N. / Schunk, R.W. | Elsevier | 1984


    Numerical simulations of double layers and auroral electric fields

    Singh, Nagendra / Schunk, R.W. / Thiemann, H. | Elsevier | 1984


    Numerical simulations of double layers and auroral electric fields

    Singh, N. / Schunk, R. W. / Thiemann, H. | NTRS | 1984



    Auroral and Polar Cap Electric Fields from Barium Releases

    J. P. Heppner / J. D. Stolarik / E. M. Wescott | NTIS | 1969