论文标题
研究互穿磁化无碰撞超临界冲击的粒子加速动力学
Investigating particle acceleration dynamics in interpenetrating magnetized collisionless super-critical shocks
论文作者
论文摘要
无碰撞的无碰撞冲击出现在各种天体物理现象中，被认为是宇宙中粒子加速的可能来源。我们先前已经研究了由单个超临界冲击诱导的颗粒加速度（其磁性马赫数高于2.7的临界值）（Yao等，2021，2022），以及两种亚临界冲击的碰撞（Fazzini等人，2022年）。在这里，我们建议从互穿超临界冲击的加速颗粒进行测量，以观察到从这种事件中观察“相锁效应”（Fazzini等，2022）。与单个超临界无碰撞冲击相比，预测这种效应会显着提高能量离子的能量光谱。因此，我们预料到，在提出的实验中获得的结果可能会对我们对一种类型的主要来源的理解（与已经有能的二级加速度机制的加速度加速）对宇宙中粒子的离子能量的理解产生重大影响。
Colliding collisionless shocks appear in a great variety of astrophysical phenomena and are thought to be possible sources of particle acceleration in the Universe. We have previously investigated particle acceleration induced by single super-critical shocks (whose magnetosonic Mach number is higher than the critical value of 2.7) (Yao et al. 2021, 2022), as well as the collision of two sub-critical shocks (Fazzini et al. 2022). Here, we propose to make measurements of accelerated particles from interpenetrating super-critical shocks to observe the ''phase-locking effect'' (Fazzini et al. 2022) from such an event. This effect is predicted to significantly boost the energy spectrum of the energized ions compared to a single supercritical collisionless shock. We thus anticipate that the results obtained in the proposed experiment could have a significant impact on our understanding of one type of primary source (acceleration of thermal ions as opposed to secondary acceleration mechanisms of already energetic ions) of ion energization of particles in the Universe.
