Exact solutions of dispersion equation for MHD waves with short-wavelength modification

作     者：CHEN Ling WU DeJin 

作者机构：purple Mountain Observatory Chinese Academy of Sciences Nanjing 210008 China Graduate University of Chinese Academy of Sciences Beijing 100012 China 

出 版 物：《Chinese Science Bulletin》 (Chinese Science Bulletin)

年 卷 期：2011年第56卷第10期

页      面：955-961页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：supported by the National Natural Science Foundation of China(10973043,41074107) National Basic Research Program of China(2011CB811402) 

主　　题：色散方程 短波长 修改 精确解 D波 传播方向 流体模式 MHD 

摘      要：Dispersive magnetohydrodynamic (MHD) waves with short-wavelength modification have an important role in transforming energy from waves into *** this paper,based on the two-fluid mode,a dispersion equation,including the short-wavelength effect,and its exact solution are *** outcome is responsible for the short-wavelength modification versions of the three ideal MHD modes (*** fast,slow and Alfve n).The results show that the fast and Alfve n modes are modified considerably by the shortwavelength effect mainly in the quasi-parallel and quasi-perpendicular propagation directions,respectively,while the slow mode can be affected by the short-wavelength effect in all propagation *** the other hand,the dispersive modification occurs primarily in the finite-β regime of 0.001 1.