Ion Heating in Coronal Holes and the Fast Solar Wind: A Theoretical Model Based on Plasma Microinstabilities

建立了低β日冕洞中电子热流不稳定性的动力学理论，并研究了它在快速太阳风的加热和加速中的作用。提出了一种新的模式，其中来自太阳的电子热流由纳米耀斑产生，然后产生离子回旋波，离子回旋波随后加热上面的日冕。因此，由离子回旋波驱动的太阳风直接与纳米耀斑活动相耦合。一种新的波衰减机制，包括粒子与驱动横场电流不稳定性的泵浦波的参数共振，以及由这种不稳定性产生的波，将被解析和数值模拟。最后，我们将研究这种交叉场电流不稳定性导致的快速太阳风中离子加热的动力学理论。

A kinetic theory of the electron heat flux instability in low-beta solar coronal holes will be developed and its role in the heating and acceleration of the fast solar wind will be investigated. A new paradigm is advanced, wherein the electron heat flux coming from the sun is produced by nanoflares and then generates ion cyclotron waves, which subsequently heat the overlying corona. Thus the solar wind driven by ion cyclotron waves is directly coupled to the nanoflare activity. A new wave damping mechanism, involving the parametric resonance of particles with a pump wave which drives a cross-field current instability, and the waves generated by the instability, will be modeled analytically and numerically. Finally, a kinetic theory of ion heating in the fast solar wind as a result of this cross-field current instability will be investigated.