Structure and Local Stability in Astrophysical Gas Dynamics

天体物理气体动力学中的结构和局部稳定性

• 批准号: 9021348
• 负责人: Steven Balbus
• 金额: $ 7.3万
• 依托单位: University of Virginia Main Campus
• 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: 1991-07-01 至 1994-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9021348&HistoricalAwards=false
• 关键词: Structure; Local; Stability; Astrophysical; Gas

Dr. Balbus will pursue a number of different theoretical studies involving large scale astrophysical gas dynamics. The investigations involve primarily galactic scale systems, and emphasis is placed on our own Galaxy in most of the projects. The projects have been motivated by observations of ionized gas in the disk and the halo of our Galaxy, as well as by observations of cool gas in the disk of the Galaxy. Theoretical developments in the field of nonlinear dynamics have also been an important stimulus for at least one of the studies. There is little question that the problems of understanding large scale disk structure in our Galaxy are entwined with the dynamical properties of its gaseous interstellar medium (ISM). This is due not only to the well appreciated connection between the ISM and dynamically cold star formation, but also to the belated realization that the highly responsive gas is an important structural component in its own right, whether or not it happens to be making stars. Dr. Balbus' studies generally share a common purpose of developing the connection between local and global gasdynamical processes commonly occurring in the disk and halo of our Galaxy.

巴尔布斯博士将进行一些不同的理论研究 涉及大尺度天体物理气体动力学。 的 调查主要涉及银河系规模的系统， 在大多数项目中，重点放在我们自己的银河系统上。 的 项目的动机是观察电离气体在 盘和我们银河系的光环，以及通过观测冷 气体在银河系的磁盘。 理论发展 非线性动力学领域也是一个重要的刺激因素 至少有一项研究。 毫无疑问，理解大问题 我们银河系中的尺度盘结构与动力学 气体星际介质（ISM）。 这是由于 不仅是ISM之间的良好联系， 动态冷星星的形成，也给迟来的 认识到高响应气体是一个重要的 结构组件本身，无论它是否发生， 去造明星 巴尔布斯博士的研究有一个共同点 发展地方与全球之间联系的目的 气体动力学过程通常发生在磁盘和晕的 我们的银河系