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.

行星日冕的经典描述是由J.W.张伯伦在1963年。 非碰撞玻尔兹曼方程的解是高层大气物理学历史上的一项开创性成就，它描述了轻气体从行星大气中逃逸的过程，并通过直接扩展提供了一个框架，通过这个框架可以分析量化行星大气的演化。 这个项目将分析处理从两体（行星，原子）形式主义扩展到三体（行星，卫星，原子）形式主义。 这一扩展有望第一次真实地描述卫星大气层的结构和演变（在我们的太阳系中确定有11个这样的大气层），并从根本上改进地球外逸层的分析模型，因为日冕是太阳-地球-原子三体问题的恰当表现。