Abstract
In this paper, we deal with the oblique electromagnetic electron cyclotron (EMEC) waves in the Uranus magnetosphere. The expression of the dispersion relation is plotted by using the method of the feature solution. After the kinetic method, the growth rate and the actual frequency of the EMEC wave are studied theoretically in the Uranian system. NASA, Voyager 2, the observed results of the space detectors show that the spin axes of the planets are abnormally oriented and that there are more particles in the high energy tail of the Uranian magnetospheric plasma. Therefore, this paper uses the Kappa distribution instead of the usual Maxwell distribution. The study extends to the tilt propagation of EMEC waves, which has a change in temperature anisotropy and propagation angle with respect to the direction of the magnetic field. These parameters were found to support the growth rate of EMEC waves. However, the response of the actual frequency of these waves is not the same as the rate of growth in all cases. These results apply to the detailed comparison of planetary studies of the space plasma environment and the magnetosphere system.
Highlights
The Voyager 2 flyby of Uranus revealed that the planet has a large and unusual magnetosphere
3.1 Plasma Parameter: Following plasma parameters are for the calculation of the growth rate and real frequency for the Lorentzian-Kappa driven electromagnetic electron cyclotron (EMEC) waves in Uranian magnetosphere
T T|| increases growth rate as well as real frequency of EMEC waves increases when waves propagate parallel to ambient magnetic field
Summary
The Voyager 2 flyby of Uranus revealed that the planet has a large and unusual magnetosphere. The Plasma Wave Instrument carried by Voyager 2 detected significant phenomenas related to local wave-particle interactions, radio emissions, electrostatic Bernstein waves and plasma waves [4,5,6,7,8,9,10] Gurnett and his team reported the presence of electron cyclotron waves in the region of inner magnetosphere of Uranus [3]. A detailed review on the kinetic electromagnetic instabilities and importance of this approach, provided by [19], is referred It dealt with effect of cold plasma addition, variation of growth rates, acceleration of heavier ions and results of computer simulation experiments explaining the evolution of particle distribution function and wave activity. The study is extended to the parallel as well as the oblique propagation of EMEC waves with variation in temperature anisotropy, energy density of electrons and angle of propagation with respect to magnetic field direction
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