A Theoretical Study Of The Whistler Mode Instability At The Uranian Bow Shock |
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| Authors: | Pandey R P Singh K M Pandey R S |
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| Institution: | (1) Department of Physics, Veer Kunwar Singh University, Ara, Bihar, India;(2) Department of Applied Physics, Institute of Technology, Banaras Hindu University, Varanasi, 221005, India |
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| Abstract: | Relativistic whistler wave mode with a perpendicular AC electric field has been studied for generalized distribution function
with an index j, which is reducible to bi-Maxwellian for j = 0, loss-cone for j = 1 and delta function for j = ∞. Based on
particle trajectories, the dispersionrelation is obtained using the techniques of a kinetic approach anda method of characteristic
solutions Calculations are compassed with observations of low frequency waves of Voyager 2 The growth rates for the plasma
parameters suited to the magnetosphere of Uranus are obtained. It is inferred that, not the magnitude but the frequency of
the AC field, influences the growth rate. In addition to the temperature anisotropy, plasma particles having a loss-cone provide
an additional source of energy. The relativistic electrons along with increasing the growth rate, widen the band width so
as to cover a wide frequency range thus may explain the entire spectrum of whistler emissions at Uranian bow shock.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | AC electric field relativistic whistler Uranus |
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