Lemoine Martin, Gremillet Laurent, Pelletier Guy, Vanthieghem Arno
Institut d'Astrophysique de Paris, CNRS-Sorbonne Université, 98 bis boulevard Arago, F-75014 Paris, France.
CEA, DAM, DIF, F-91297 Arpajon, France.
Phys Rev Lett. 2019 Jul 19;123(3):035101. doi: 10.1103/PhysRevLett.123.035101.
We develop a comprehensive theoretical model of relativistic collisionless pair shocks mediated by the current filamentation instability. We notably characterize the noninertial frame in which this instability is of a mostly magnetic nature, and describe at a microscopic level the deceleration and heating of the incoming background plasma through its collisionless interaction with the electromagnetic turbulence. Our model compares well to large-scale 2D3V particle-in-cell simulations, and provides an important touchstone for the phenomenology of such plasma systems.
我们建立了一个由电流丝化不稳定性介导的相对论无碰撞对撞激波的综合理论模型。我们特别刻画了这种不稳定性主要为磁性质的非惯性系，并在微观层面描述了入射背景等离子体通过与电磁湍流的无碰撞相互作用而产生的减速和加热过程。我们的模型与大规模二维三维粒子模拟结果吻合良好，并为这类等离子体系统的现象学提供了一个重要的试金石。
