在MHD、Hall和动力学模拟中碰撞Alfvénic波包
Colliding Alfvénic wave packets in MHD, Hall and kinetic simulations
摘要：
Parker-Moffatt问题的分析，最近在Pezzi et al.（2016）中重新讨论，在这里通过包括Hall磁流体动力学和两个混合动力学Vlasov-Maxwell数值模型进行扩展。分散和动力学功能的存在下进行了详细的研究，两个动力学代码之间的比较也报道。关注非麦克斯韦签名的存在表明，在碰撞过程中，具有强温度各向异性特征的区域被恢复，质子分布函数沿磁场的方向显示出一个光束，类似于最近对太阳风的一些观测。
英文摘要：
The analysis of the Parker-Moffatt problem, recently revisited in Pezzi et al. (2016), is here extended by including the Hall magnetohydrodynamics and two hybrid kinetic Vlasov-Maxwell numerical models. The presence of dispersive and kinetic features is studied in detail and a comparison between the two kinetic codes is also reported. Focus on the presence of non-Maxwellian signatures shows that - during the collision - regions characterized by strong temperature anisotropy are recovered and the proton distribution function displays a beam along the direction of the magnetic field, similar to some recent observations of the solar wind.
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