Three-Dimensional Hybrid Simulation and Analytic Study of the Evolution of Alfven Waves in the Corona and Solar Wind

研究人员将研究在太阳风中连续观测到的大振幅阿尔夫尼波动的非线性和动力学特征。最近来自SOHO航天器的观测表明，阿尔芬尼波动可能在太阳风加速中也很重要，无论是通过回旋加速器共振附近的波耗散加热，还是通过波压力梯度力的直接强迫。主要的努力是探索流体（磁流体动力学）和动力学过程之间的联系，通过混合模拟，允许离子动力学和波浪湍流的全面处理。模拟中包含了二维谱和波粒相互作用。

The investigators will examine nonlinear and kinetic features of large amplitude Alfvenic fluctuations that are continuously observed in the solar wind. Recent observations from the SOHO spacecraft indicate that Alfvenic fluctuations may also be important in solar wind acceleration both through wave dissipation heating near the cyclotron resonance and direct forcing by the wave pressure gradient force. The main effort is to explore the connection between fluid (magnetohydrodynamic) and kinetic processes through hybrid simulations that allow full treatment of ion kinetics and wave turbulence. Two dimensional spectra and wave-particle interactions are included in the simulations.