The AMPTE/CCE spacecraft has, on occasion, encountered the earth's bow shock near apogee (about 9 earth radii). During one encounter, on November 1, 1984, the bow shock was observed to pass back and forth over the spacecraft several times in a periodic fashion. The period of the oscillation was about 20 seconds, and an upstream wave with a similar period was observed in the solar wind just prior to the multiple shock crossings. Minimum variance analysis of the shock crossings shows that the magnetic field carried out a single rotation through 360 deg for each pair of shock crossings. This implies that the shock was responding to the rotation of the field in the upstream wave, and it is shown how the plasma displacement associated with the upstream wave can produce the observed oscillations. These data may provide support for the wavelike structure of quasi-parallel shocks predicted in simulations.


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    Titel :

    Periodic oscillations of the quasi-parallel bow shock as observed with the AMPTE/CCE spacecraft


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    1991-01-01



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :



    The AMPTE CCE spacecraft

    Dassoulas, J. / Margolies, D.L. / Peterson, M.R. | Tema Archiv | 1985


    The AMPTE UKS spacecraft

    Ward, A.K. / Bryant, D.A. / Edwards, T. et al. | Tema Archiv | 1985


    The AMPTE IRM spacecraft

    Hausler, R. / Melzner, F. / Stocker, J. et al. | Tema Archiv | 1985


    Propelling AMPTE into orbit

    SMOLA, J. | AIAA | 1985