Dynamics of Cometary Environments

彗星环境动力学

• 批准号: 9015928
• 负责人: Tamas Gombosi
• 金额: $ 7.5万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-01-15 至 1993-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9015928&HistoricalAwards=false
• 关键词: Dynamics; Cometary; Environments

This grant supports Dr. Gombosi's efforts at modeling the environments of comets. The main thrust of the work will be the further development of a time-dependent, multidimensional dusty model of the inner coma. In addition, new models of the nucleus- coma interface, the radiative transfer processes, as well as the plasma environment of the comet will be developed. The historic encounters with comets Halley and Giacobini-Zinner have begun to lead to a better understanding of the major physical and chemical processes controlling cometary environments. The quantitative and qualitative leap of available information paved the road to a new generation of comprehensive comet models, which will synthesize our knowledge in such diverse areas as nucleus formation, orbital evolution, gas and dust emission, dynamics and aeronomy of partially ionized dusty gas flows, and solar wind interaction. A new generation of cometary models will evolve from a series of intitiatives by various groups and individuals simultaneously cooperating and competing. Dr. Gombosi will be an active participant in this effort.

这笔拨款支持贡博西博士对彗星环境建模的努力。这项工作的重点将是进一步发展一个时间依赖的、多维的内昏迷尘埃模型。此外，还将建立彗核-彗发界面、辐射传递过程以及彗星等离子体环境的新模型。与哈雷彗星和贾科比尼-津纳彗星的历史性相遇，已经开始使人们更好地了解控制彗星环境的主要物理和化学过程。现有信息的定量和质的飞跃为新一代综合彗星模型铺平了道路，该模型将综合我们在核形成、轨道演化、气体和尘埃发射、部分电离尘埃气流的动力学和航空学以及太阳风相互作用等不同领域的知识。新一代的彗星模型将从一系列不同群体和个人同时合作和竞争的倡议中发展出来。贡博西博士将积极参与这一努力。