We suggest that pairing of bouncing medium-energy electrons in the auroral upward current region close to the mirror points may play a role in driving the electron cyclotron maser instability to generate an escaping narrow band fine structure in the auroral kilometric radiation. We treat this mechanism in the gyrotron approximation, for simplicity using the extreme case of a weakly relativistic Dirac distribution instead the more realistic anisotropic Jüttner distribution. Promising estimates of bandwidth, frequency drift and spatial location are given.

中文翻译：

---

极光公里辐射与电子配对

我们建议在极光向上的电流区域中靠近镜像点的一对中能量电子的反弹可能在驱动电子回旋加速器激射体不稳定性从而在极光千米辐射中产生逃逸的窄带精细结构中起作用。为了简单起见，我们使用回旋加速器近似处理该机制，使用弱相对论狄拉克分布的极端情况，而不是更现实的各向异性Jüttner分布，来简化这一过程。给出了带宽，频率漂移和空间位置的有希望的估计。