Nonlinear interaction of inertial Alfv,n wave with magnetosonic wave and cavitation phenomena

In the present paper, authors have investigated nonlinear interaction of inertial Alfv,n wave with magnetosonic wave for low beta-plasma (beta a parts per thousand(a)m (e) /m (i) ). Authors have developed the set of dimensionless equations in presence of ponderomotive force due to inertial Alfv,n wave in the dynamics of magnetosonic wave. Stability analysis and numerical simulation have been carried out to study the effect of nonlinear coupling between waves which result in the formation of localized structures and density cavity, applicable to auroral region and solar corona. The result reveals that localized structure and density cavity becomes more complex and intense in nature in quasi steady state. From the obtained result, we found the density fluctuations similar to 0.1n (0), consistent with the FAST spacecraft observation.