A generation mechanism for discrete very low frequency emissions observed at Varanasi |
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| Authors: | A K Singh S B Singh R P Singh |
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| Institution: | (1) Department of Physics, Maharaja College, V.K.S. University, 802 301 Arrah, India;(2) Physics Department, Banaras Hindu University, 221 005 Varanasi, India |
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| Abstract: | A new type of discrete VLF emissions recorded at the low-latitude ground station Varanasi (geomag. lat. 14°55′ N, geomag.
long. 154°E;L = 1.07) during the strong magnetic activity on 29–30 April 1990 have been reported. A generation mechanism for various temporal
and spectral features of discrete VLF emissions recorded at Varanasi is presented on the basis of cyclotron resonance interaction
between whistler mode wave and energetic electrons ejected by substorm electric fields. An attempt is also made to determine
parallel energy and wave growth relevant to the generation process of discrete VLF emissions. Finally, our results are discussed
with other published works |
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| Keywords: | Physics of magnetosphere trapped particles waves: propagation and excitation |
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