Abstract Crossings of the magnetopause near the subsolar point are analyzed using data of THEMIS mission. Variations of the magnetic field near magnetopause measured by one of THEMIS satellites are studied and compared with simultaneous measurements in the solar wind by another THEMIS satellite. The time delay of the solar wind arrival at the subsolar point of the magnetopause is taken into account. 30 and 90s averaging of the magnetic field in the magnetosheath is produced. The results of averaging are compared with the results of measurements in the solar wind before the bow shock and foreshock. It is shown, that B x component of the magnetic field near magnetopause is near to zero, which supports the possibility to consider the magnetopause as the tangential discontinuity. Comparatively good correlation of B y component in the solar wind and near the magnetopause is observed. The correlation of B z component near the magnetopause and IMF is practically absent, the sign of the B z near the subsolar point does not coincide with the sign of IMF B z in 30% cases.


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    Title :

    Comparison of the magnetic field before the subsolar magnetopause with the magnetic field in the solar wind before the bow shock



    Published in:

    Advances in Space Research ; 54 , 4 ; 604-616


    Publication date :

    2014-04-28


    Size :

    13 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English