标题： 电磁离子回旋波在地球磁层中的频率啁啾 显示英文标题

标题： Frequency Chirping of Electromagnetic Ion Cyclotron Waves in Earth's Magnetosphere

摘要： 电磁离子回旋波已知会表现出频率啁啾，有助于能量粒子的快速散射和加速。 然而，啁啾的物理机制仍然不明确。 在这里，我们提出一个新模型来解释啁啾，并提供直接的观测证据进行验证。 我们的结果首次将波的频率啁啾与波幅和磁场不均匀性联系起来。 该模型的基本原理的普遍适用性为理解其他波的频率啁啾开辟了新的途径。 显示英文摘要

摘要： Electromagnetic ion cyclotron waves are known to exhibit frequency chirping, contributing to the rapid scattering and acceleration of energetic particles. However, the physical mechanism of chirping remains elusive. Here, we propose a new model to explain the chirping and provide direct observational evidence for validation. Our results relate the frequency chirping of the wave to both the wave amplitude and magnetic field inhomogeneity for the first time. The general applicability of the model's underlying principle opens a new path toward understanding the frequency chirping of other waves.