Relativistic Asymmetric Magnetic Reconnection
Relativistic Asymmetric Magnetic Reconnection
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相对论不对称磁重联
DOI：
10.1103/physrevlett.128.145101
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发表时间：
2022
影响因子：
8.6
通讯作者：
Caprioli, Damiano
中科院分区：
文献类型：
--
作者：
Mbarek, Rostom;Haggerty, Colby;Sironi, Lorenzo;Shay, Michael;Caprioli, Damiano
我们推导了在不对称流入条件的一般情况下相对论磁重联的基本标度方程，并获得了流出洛伦兹因子和重联率的预测。细胞内动力学粒子模拟表明，流出速度以及非热谱指数受到每个粒子磁能较弱的流入等离子体的约束，这与缩放预测一致。这些结果对于理解磁控天体物理系统中重联产生的非热发射具有重要意义，其中许多系统本质上可能是不对称的。结果提供了一种将重联不对称性纳入相对论体系中的定量方法。
We derive basic scaling equations for relativistic magnetic reconnection in the general case of asymmetric inflow conditions and obtain predictions for the outflow Lorentz factor and the reconnection rate. Kinetic particle-in-cell simulations show that the outflow speeds as well as the nonthermal spectral index are constrained by the inflowing plasma with the weaker magnetic energy per particle, in agreement with the scaling predictions. These results are significant for understanding nonthermal emission from reconnection in magnetically dominated astrophysical systems, many of which may be asymmetric in nature. The results provide a quantitative approach for including asymmetry on reconnection in the relativistic regime.