Nonlinear Effects of Inertial Alfvén Wave in Low Beta Plasmas

English Abstract:

This paper is devoted to the study of the nonlinear interaction and propagation of high frequency pump inertial Alfvén wave (IAW) with comparatively low frequency inertial Alfvén wave (IAW) with emphasis on nonlinear effects and applications within space plasma and astrophysics for low - plasma. We have developed the set of dimensionless equations in presence of ponderomotive nonlinearity due to high frequency pump IAW in the dynamics of comparatively low frequency IAW. Stability analysis and numerical simulation has been carried out for the coupled system comprising of pump IAW and low frequency IAW to study the localization and turbulent spectra, applicable to auroral region. The result reveals that localized structures becomes more complex and intense in nature at the quasi steady state. From the obtained result, we found that the present model may be useful to study the turbulent fluctuations in accordance with the observations of FAST/THEMIS spacecraft.