AbstractOn 17 August 2002 the Cluster spacecraft moved through the dayside magnetosphere. Between 16:00 and 18:30 UT clear monochromatic oscillations are seen in both electric field and magnetometer data. The frequency is 4.2mHz in the spacecraft frame of reference. The oscillations have a clear spatial localisation. The magnetic field oscillations are radially polarised in the plane perpendicular to the background magnetic field, indicating that the wave is in the poloidal mode. From the difference in phase between the satellites we estimate the azimuthal wave number, m, to be about 130, consistent with the magnetic field polarisation. The frequency is stable for different L-values as well as over time. From the value of m, the Doppler shift due to satellite motion is estimated to 0.5mHz. By looking at the phase of the electric and the magnetic field close to the equator we conclude that the oscillations are in a mode with an odd number of half wavelengths between the two ionospheres.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Cluster satellite observations of mHz pulsations in the dayside magnetosphere


    Beteiligte:

    Erschienen in:

    Advances in Space Research ; 38 , 8 ; 1730-1737


    Erscheinungsdatum :

    2005-04-27


    Format / Umfang :

    8 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Schlagwörter :


    Cluster satellite observations of mHz pulsations in the dayside magnetosphere

    Eriksson, P. T. / Blomberg, L. G. / Glassmeier, K. H. et al. | British Library Conference Proceedings | 2006



    Cusp confinement zones on quiet and disturbed dayside magnetosphere

    Gusev, A. A. / Jayanthi, U. B. / Pugacheva, G. I. et al. | British Library Conference Proceedings | 2006


    Cusp confinement zones on quiet and disturbed dayside magnetosphere

    Gusev, A.A. / Jayanthi, U.B. / Pugacheva, G.I. et al. | Elsevier | 2005