Collisionless Magnetorotational Turbulence in Pair Plasmas: Steady-State Dynamics, Particle Acceleration, and Radiative Cooling,Physical Review Letters

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Collisionless Magnetorotational Turbulence in Pair Plasmas: Steady-State Dynamics, Particle Acceleration, and Radiative Cooling
Physical Review Letters ( IF 8.1 ) Pub Date : 2024-07-25 , DOI: 10.1103/physrevlett.133.045202
Fabio Bacchini _{1,

2} , Vladimir Zhdankin _{3,

4} , Evgeny A Gorbunov ₁ , Gregory R Werner ₅ , Lev Arzamasskiy ₆ , Mitchell C Begelman _{7,

8} , Dmitri A Uzdensky ₅

Affiliation

We present 3D fully kinetic shearing-box simulations of pair-plasma magnetorotational turbulence with unprecedented macro-to-microscopic scale separation. While retrieving the expected fluid behavior of the plasma at large scales, we observe a steepening of turbulent spectra at kinetic scales and substantial angular-momentum transport linked with kinetic processes. For the first time, we provide a definitive demonstration of nonthermal particle acceleration in kinetic magnetorotational turbulence agnostically of shearing-box initial conditions by means of a novel strategy exploiting synchrotron cooling.

中文翻译：

对等离子体中的无碰撞磁旋转湍流：稳态动力学、粒子加速和辐射冷却

我们提出了对等离子体磁旋转湍流的 3D 全动力学剪切盒模拟，具有前所未有的宏观到微观尺度的分离。在大尺度上检索等离子体的预期流体行为时，我们观察到动力学尺度上湍流光谱的陡化以及与动力学过程相关的大量角动量传输。我们首次通过利用同步加速器冷却的新颖策略，提供了与剪切箱初始条件无关的动磁旋转湍流中非热粒子加速的明确演示。

更新日期：2024-07-26

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