论文标题

对等离子体和电子普罗顿等离子体之间无碰撞的切线不连续性

Collisionless tangential discontinuity between pair plasma and electron-proton plasma

论文作者

Dieckmann, Mark Eric

论文摘要

我们使用一维粒子中的粒子(PIC)进行研究,将一对云扩展到磁化电子普罗顿血浆中,以及分隔两个等离子体的切向不连续性的形成和随后的传播。它的传播速度达到了平衡不连续性与对云的热压和质子的RAM压力的值。质子通过不连续性加速到超过快速磁速速度的速度。因子10。冲击下游质子温度升高,在不连续性之前,后者完好无损。我们通过将一对云在模拟边界处注入一对云中,从而创造出不连续性,并将其渗入垂直磁场渗透到均匀的电子普罗顿等离子体中。 X射线二进制(微Quasars)的相对论对射流中无碰撞的切向不连续性与其内茧的相对论瘦素永久性接触,它们成为无线电同步器发射的来源。

We study with a one-dimensional particle-in-cell (PIC) simulation the expansion of a pair cloud into a magnetized electron-proton plasma as well as the formation and subsequent propagation of a tangential discontinuity that separates both plasmas. Its propagation speed takes the value that balances the magnetic pressure of the discontinuity against the thermal pressure of the pair cloud and the ram pressure of the protons. Protons are accelerated by the discontinuity to a speed that exceeds the fast magnetosonic speed by the factor 10. A supercritical fast magnetosonic shock forms at the front of this beam. An increasing proton temperature downstream of the shock and ahead of the discontinuity leaves the latter intact. We create the discontinuity by injecting a pair cloud at a simulation boundary into a uniform electron-proton plasma, which is permeated by a perpendicular magnetic field. Collisionless tangential discontinuities in the relativistic pair jets of X-ray binaries (microquasars) are in permanent contact with the relativistic leptons of its inner cocoon and they become sources of radio synchrotron emissions.

扫码加入交流群

加入微信交流群

微信交流群二维码

扫码加入学术交流群,获取更多资源