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Ann. Geophys., 24, 1705-1712, 2006
www.ann-geophys.net/24/1705/2006/
© European Geosciences Union 2006
Study of whistler mode instability in Saturn's magnetosphere
R. P. Singhal and A. K. Tripathi
Department of Applied Physics, Institute of Technology, Banaras Hindu University, Varanasi-221 005, India
Abstract. A dispersion relation for parallel propagating whistler mode waves has been
applied to the magnetosphere of Saturn and comparisons have been made with
the observations made by Voyager and Cassini. The effect of hot (suprathermal)
electron-density, temperature, temperature anisotropy, and the spectral index
parameter, κ, on the temporal growth rate of the whistler mode emission is
studied. A good agreement is found with observations. Electron pitch angle and
energy diffusion coefficients have been obtained using the calculated
temporal growth rates.
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