Hall-magnetohydrodynamic surface waves in solar wind flow-structures

摘要: This paper investigates the parallel propagation of agnetohydrodynamic (MHD) surface waves travelling along an ideal steady plasma slab surrounded by a environment in framework Hall magnetohydrodynamics. The magnitudes ambient magnetic field, density and flow velocity inside outside are different. Two possible directions relative (in frame reference co-moving with flow) have been studied. In contrast to conventional MHD which usually assumed be pure or pseudo-surface waves, Hall-MHD approach makes it necessary treat normal slab's modes as generalized waves. latter considered superposition two partial one is pure/pseudo-surface-wave whereas other constitutive wave leaky one. From kinds surface-wave that can propagate, notably sausage kink ones, dispersion behaviour mode turns out more complicated than mode. general, increases waves' phase velocities comparing their static slab. applicability results real solar wind flow-structures briefly discussed.