VLF emissions and substorm activity |
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| Authors: | AC Das VH Kulkarni |
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| Institution: | Physical Research Laboratory, Ahmedabad 380009, India |
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| Abstract: | The resonant interaction between the whistler mode waves and the energetic electrons near the plasmapause boundary has been studied in the presence of field aligned currents which seem to exist during substorm activity. It is shown that the electrons which carry the current along the direction of the magnetic field enhance the whistler mode growth considerably if the streaming velocity is small compared to the phase velocity of the wave. It is likely that this is one of the mechanisms explaining the intense VLF emissions observed near the plasmapause during substorm activity. |
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