SGER: Theory for Satellite Coronae and Atmospheric Escape

SGER：卫星日冕和大气逃逸理论

• 批准号: 0623327
• 负责人: William Smyth
• 金额: --
• 依托单位: Atmospheric and Environmental Research Inc
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-11-15 至 2009-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0623327&HistoricalAwards=false
• 关键词: SGER; Theory; Satellite; Coronae; Atmospheric

The classical description of planetary coronae - that region of the atmosphere wherein the fluid flow problem transitions from a collisional to a non-collisional medium - was established by J.W. Chamberlain in 1963. That solution of the non-collisional Boltzmann equation stands as a seminal achievement in the history of Aeronomy, describing the escape of light gases from planetary atmospheres and by direct extension providing a framework by which the evolution of planetary atmospheres could be analytically quantified. This project expands that analytical treatment from a two-body (planet, atom) formalism to a three-body (planet, satellite, atom) formalism. That expansion promises the first realistic description of satellite atmosphere structure and evolution (there are 11 such atmospheres identified in our solar system), as well as a fundamental improvement in the analytical model of the Earth exosphere, since that corona is properly the manifestation of the Sun-Earth-atom three-body problem.

行星日冕（流体流动问题从碰撞介质过渡到非碰撞介质的大气区域）的经典描述是由 J.W.张伯伦于 1963 年提出。非碰撞玻尔兹曼方程的解是航空学史上的一项开创性成就，它描述了轻气体从行星大气中的逃逸，并通过直接扩展提供了一个框架，通过该框架可以分析行星大气的演化量化。 该项目将分析处理从二体（行星、原子）形式主义扩展到三体（行星、卫星、原子）形式主义。 这一扩展有望首次真实地描述卫星大气层的结构和演化（在我们的太阳系中发现了 11 个这样的大气层），并且对地球外逸层的分析模型进行了根本性的改进，因为日冕正是太阳-地球-原子三体问题。