Magnetospheric Electron Density

磁层中的电子密度对许多随时间变化的现象有重要影响，如哨声波、合唱波和嘶嘶声的生长和传播。合唱波被认为加速了辐射带的电子。电子密度可以作为质量密度的粗略代表，质量密度影响极低频波的生长和传播以及激波在磁层中的传播。这两种现象都可以加速辐射带电子，或者通过俯仰角散射导致它们的损失。这个项目将发展磁层中电子密度的经验模型。它将使用来自各种卫星任务的数据（IMAGE， POLAR, ISEE-1， CRRES）。它将通过结合IMAGE和Polar的数据来检查密度的场线依赖性。该项目将开发基于太阳风参数的模型。它还将研究磁暴期间电子密度的变化。

The electron density in the magnetosphere crucially affects a number of time-dependent phenomena such as the growth and propagation of whistler waves, chorus waves, and hiss. Chorus waves are thought to accelerate radiation belt electrons. The electron density can serve as a rough proxy for mass density, which affects the growth and propagation of ULF waves and the propagation of shock waves through the magnetosphere. Both of these phenomena can also accelerate radiation belt electrons, or cause their loss through pitch angle scattering.This project will develop empirical models of the electron density in the magnetosphere. It will used data from a variety of satellite missions (IMAGE, POLAR, ISEE-1, CRRES). It will examine the field-line dependence of density by combining data from IMAGE and Polar. The project will develop models based on solar wind parameters. It will also examine how the electron density varies during magnetic storms.