Resonant Absorption of Nonlinear Slow MHD Waves in Isotropic Steady Plasmas - II. Application: Resonant Acoustic Waves

摘要: Nonlinear theory of driven magnetohydrodynamic (MHD) waves in the slow dissipative layer isotropic steady plasmas developed by Ballai and Erdelyi (Solar Phys. 180 (1998)) is used to study nonlinear interaction sound with one-dimensional plasmas. An inhomogeneous magnetic slab field-aligned plasma flow sandwiched a homogeneous static magnetic-free plasma. Sound launched from propagate into region interacting localised are partially reflected, dissipated or transmitted this region. The nonlinearity parameter, introduced Erdelyi, assumed be small regular perturbation method obtain analytical wave solutions. Analytical studies resonant absorption show that efficiency process strongly depends on both equilibrium parameters characteristics wave. We also find shear can significantly influence limits thin weak nonlinearity. presence an may therefore important for MHD phenomena. A parametric analysis shows part enhanced flow.