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Title: Generation of field-aligned currents by VLF waves in the magnetosphere
Authors: Kulkarni, V H
Keywords: VLF Waves;Field-aligned current;Whistler;Whistler
Issue Date: Aug-2003
Publisher: NISCAIR-CSIR, India
Abstract: This paper shows that VLF waves can be a source for the high energy electrons of tens of keV, carrying the small scale magnetic field-aligned Birkeland currents of sizes < 50 km in the magnetosphere. The dispersion relation for whistler mode waves in a magnetized plasma consisting of cold, warm and hot electrons and a beam of electrons carrying the current is examined. The VLF growth rates in the presence of field-aligned currents are found to be weaker and the current carrying electrons extract energy from the VLF waves. Along with the dependence of field-aligned currents and VLF waves on the magnetic activity, both these parameters also depend on each other directly.
Page(s): 189-192
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.32(4) [August 2003]

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