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Study of wave-particle interaction in the disturbed magnetosphere

Siingh, D and Singh, S and Singh, RP (2005) Study of wave-particle interaction in the disturbed magnetosphere. Indian Journal of Radio and Space Physics, 34 (5). pp. 305-313.

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Doppler-shifted cyclotron resonance interaction between whistler mode wave and counter streaming energetic electrons has been invoked to explain whistler triggered emissions recorded at low latitude station Varanasi (Geomagnetic latitude 14°55', L = 1.07) during moderate magnetic storm activity (ΣKP= 28¯, KP index varies from 4- to 4+ during the observation period) on 28 Feb, 1993. The mechanism of generation of triggered emissions is briefly discussed. Parallel resonance energy of participating electrons under normal and disturbed magnetospheric conditions have been evaluated, which is found to decrease with increase in L-value and wave frequency. Applying a simplified approach we have estimated the interaction length, wave magnetic field and transverse resonant current, which are found to increase during the disturbed magnetospheric conditions. However, the number of energetic electrons participating in resonance process under normal and disturbed magnetosphere remains approximately the same

Item Type: Article
Additional Information: Copyright of this article belongs to NISCAIR
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 04 Apr 2015 04:03
Last Modified: 04 Apr 2015 04:04

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