致密天体等离子体中线性波的传播特性

摘要

利用在相对论量子力学框架下建立的磁流体动力学模型,研究了致密天体等离子体中线性波的传播特性,旨在考察相对论效应和量子效应对致密天体等离子体基本物理过程的影响,揭示其相对论量子物理的本质.文章从包含相对论效应和量子效应的磁流体动力学方程和麦克斯韦方程组出发,首先推导出致密天体等离子体的色散方程;然后在无外磁场,外磁场平行于波矢量和垂直于波矢量三种特殊情况下,研究不同模式线性波的色散关系.研究发现相对论效应和量子效应对线性波在致密天体等离子体中传播的色散关系有修正,当选取脉冲星磁层等离子体特征参数做数量级估算时,相对论量子修正项比较显著.%The propagation of linear waves in the intense-solid astrophysical plasmas are investigated by using a relativistic magnetohydrodynamic model based on the framework of the relativistic quantum theory.Starting from the relativistic quantum magnetohydrodynamic equations and Maxwell's equations,the dispersion equation for relativistic quantum magnetoplasmas is derived.The dispersion relations of linear waves are discussed in three cases,namely,propagation without,perpendicular,and parallel to the background magnetic field.The results show that both quantum effects and relativistic effects affect the propagation of linear waves,and the corrections are significant when choosing the plasma parameters of the pulsar magnetoplasmas.