LAUSR

Nonlinear interplay between the finite frequency inertial Alfven wave and slow magnetosonic wave for low β-plasma (β≪me/mi) has been studied in the paper. The governing equation of slow magnetosonic wave has been derived in the presence of ponderomotive force associated with the finite frequency inertial Alfven wave. A numerical simulation has been performed for the set of dimensionless governing equations representing finite frequency inertial Alfven wave and slow magnetosonic wave for the parameters of auroral region. The localized structures and turbulence spectrum have been studied for the different angles of propagation (like θ=5°,25°,45°,75°) of slow magnetosonic wave. From the results, it has been observed that the localization becomes labyrinthine and varies with the change in the angle of propagation for the slow magnetosonic wave. Further, the spectral index follows the (∼k−3.8) for θ=5°, (∼k−4.05) for θ=25°, (∼k−4.2) for θ=45°, and (∼k−4.35) for θ=75°. Hence, one can conclude that the variation...