The formation and propagation characteristics of the magnetosonic shocks are investigated in a three-component magnetoplasma, consisting of warm dynamical ions with hot inertialess electrons and positrons. By solving the well-known nonlinear magnetohydrodynamic equations within the framework of diagonalization method, a set of two exact nonlinear wave equations is derived, which permits for both analytical as well as numerical solutions. It is shown that coherent solitary structures are formed at time τ = 0, which transform into the magnetosonic shocklets with the passage of time ( τ > 0) because of the rapid steepening of ion-fluid velocity and magnetic field perturbations. The nonlinear ponderomotive force could be the major responsible force behind the wave steepening and wave breaking in such plasmas. Furthermore, the variation of plasma β , the positron-to-electron density ratio p and the ion-to-electron temperature ratio σ significantly ...

中文翻译：

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正电子离子等离子体中的磁声子波

在由热动离子和热惯性电子和正电子组成的三组分磁等离子体中研究了磁声激波的形成和传播特性。通过在对角化方法的框架内求解众所周知的非线性磁流体动力学方程，导出了一组两个精确的非线性波动方程，可以进行解析和数值求解。结果表明，在时间τ= 0时形成了相干的孤立结构，由于离子流体速度的迅速变陡和磁场的扰动，随着时间的推移（τ> 0）转变为磁声小波。非线性质动力是这种等离子体中波陡化和波破碎背后的主要作用力。此外，血浆β的变化