论文标题
关于亚颂歌弧的动力学理论
On the Kinetic Theory of Subauroral Arcs
论文作者
论文摘要
我们报道了强大的亚颂歌离子漂移中的亚发弧的数值和理论研究（说） - 史蒂夫和纠察围栏。它们的解释需要中性物种的振动和电子状态的特定外电子分布以及激发。我们表明，强烈的说话中的电离层反馈，有或没有所谓的电离层河谷的低密度槽会产生强烈的，小规模的田间对准电流和F2峰以下的电场。使用这些磁场，我们求解了玻尔兹曼动力学方程，以分布电子和功率，以激发中性气体的激发和电离（能量平衡）。获得的外电子种群和能量平衡只是纠察围栏所必需的。关于史蒂夫，动力学理论的预测与其基本特征达成了良好的定性协议。此外，该理论预测，下产弧可能具有典型的极光样排放的瞬态相，随后逐渐消失。
We report on numerical and theoretical investigation of subauroral arcs within strong subauroral ion drifts (SAID)--STEVE and Picket Fence. Their explanation requires the specific suprathermal electron distribution and excitation of vibrational and electronic states of neutral species. We show that the ionospheric feedback in the strong SAID with low-density troughs with or without a so-called ionospheric valley generates intense, small-scale field-aligned currents and electric fields below the F2 peak. With these fields, we solved the Boltzmann kinetic equation for the distribution of electrons and power for excitation and ionization of neutral gas (the energy balance). The obtained suprathermal electron population and energy balance are just what is necessary for Picket Fence. Concerning STEVE, the kinetic theory predictions are in a good qualitative agreement with its basic features. Besides, the theory predicts that subauroral arcs might have the transient phase with typical aurora-like emissions that fade out afterwards.
