U.S.-France Cooperative Research: Charged Particle Dynamics between the Adiabatic and Current Sheet Limits

这个为期两年的奖项将支持美国和法国在大气和空间物理学方面的合作研究，由伊利诺伊州立大学的Richard F. Martin和法国地球和行星环境研究中心的Dominique Delcourt共同进行。该项目解决了北极光（极光亚暴）的物理响应太阳风的变化。地球后面的磁尾区域是极光亚暴被触发和激发的地方。研究人员提出了三个计算/理论项目，以解决：(1)亚暴的基本非线性动力学；(2)模型在近地磁尾中的应用；(3)模型对电离层起源离子进入磁尾的影响。这些研究与理解太空风暴有关，太空风暴导致商业航天器异常和故障，电力分配和通信中断。这位美国研究者为这次合作带来了基本非线性动力学和磁尾动力学建模的背景。法国研究人员在电离层和近地粒子动力学方面的专业知识补充了这一点。该项目将进一步了解空间风暴，并扩展预测空间天气的工作。

This two-year award will support U.S.-France cooperative research in atmospheric and space physics between Richard F. Martin of Illinois State University and Dominique Delcourt of the French Center for the Study of Earth and Planetary Environments. The project addresses the physics of the aurora borealis (aurora substorms) in response to solar wind variations. The magnetotail region behind the earth is where aurora substorms are triggered and energized. The investigators propose three computational/theoretical projects that address: (1) basic nonlinear dynamics of substorms; (2) applications of the model to the near-Earth magnetotail; and (3) consequences of the model on ions of ionosphere origin entering the magnetotail. These studies are relevant to understanding of space storms, which cause commercial spacecraft anomalies and failures, interruptions of power distribution and of communications. The U.S. investigator brings to this collaboration background in basic nonlinear dynamics and magnetotail dynamical modeling. This is complemented by the French investigator's expertise in ionospheric and near-Earth particle dynamics. The project will further understanding of space storms and extend the work on predicting space weather.