Magnetosphere - Ionosphere Coupling at Jupiter

汉娜将调查气体巨星的电离层外流。汉娜将使用现有的电离层外流模型，对其进行修改，以包含更现实的条件，然后尝试解释电离层外流如何影响磁层动力学。这是一项关键的工作，也是外行星社区磁层当前的一个大课题。第一个项目将涉及修改应用于电离层外流模型的极光电流，以更好地了解这些结构的变化如何改变从行星转移到磁层的物质数量。在项目的后期阶段，汉娜可以选择这个模型的去向。一种途径是准确地解决大气外流如何到达磁层以及在什么时间尺度和什么地点。另一种方法是将该模型与高纬度密度结构模型结合使用，以更好地确定高纬度准静态加速的性质。最后一种方法可能是将磁层-电离层-热层耦合模型更直接地与电离层外流模型结合起来，以更好地全面描述系统。汉娜希望成为比较行星磁层的专家，因此我预计她将把她的任何研究应用于木星和土星。这将允许她跨多个系统测试底层驱动程序

Hannah will be investigating ionospheric outflow at the Gas Giants. Hannah will be working with an existing model of ionospheric outflow, modifying it to contain more realistic conditions and then trying to interpret how the ionospheric outflow impacts magnetospheric dynamics. This is a critical piece of work and a current big topic in the magnetospheres of the outer planets community. The first project will involve modifying the auroral currents applied to the ionospheric outflow model to better understand how variations in these structures can alter the amount of material being transferred from planet to magnetosphere. In the later stages of the project, Hannah can choose where to go with this model. One avenue would be to address exactly how the atmospheric outflow reaches the magnetosphere and over what timescales and at what locations. Another approach could be to use this model in concert with models of the high-latitude density structure to better determine the nature of quasi-static acceleration at high-latitudes. A final approach could be to combine magnetosphere-ionosphere-thermosphere coupling models more directly with the ionospheric outflow model to better fully describe the system. Hannah wishes to be an expert in comparative planetary magnetospheres, and thus I expect that she will apply any of her studies to both Jupiter and Saturn. This will allow her to test underlying drivers across multiple systems