Diffusive Transport of the Interstellar Magnetic Field

星际磁场的扩散传输

• 批准号: 0098701
• 负责人: Ellen Zweibel
• 金额: $ 30.5万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-05-01 至 2003-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0098701&HistoricalAwards=false
• 关键词: Diffusive; Transport; Interstellar; Magnetic; Field

AST 0098701ZweibelThe Galactic magnetic field is a major component of the interstellar medium. Although the origin of the field remains a mystery, many of the processes which maintain the field in its current state have now been identified. One of the most important of these processes is diffusive transport, which changes the distribution of magnetic flux to mass despite the high conductivity of interstellar gas. Dr. Ellen Zweibel, at the University of Colorado, will pursue two research projects directed at understanding diffusive transport of the interstellar magnetic field. The first project concerns the field strengths in molecular clouds, which impact molecular cloud dynamics and star formation. The second project concerns the escape of magnetic flux from the Galactic disk, its implications for the vertical structure of the Galactic magnetic field, and its impact on the Galactic dynamo. These projects are related through their joint dependence on ambipolar drift and turbulence. ***

AST 0098701ZweibelThe银河磁场是星际介质的主要组成部分。 尽管该领域的起源仍然是一个谜，但现在已经确定了将该领域保持在其当前状态的许多过程。 这些过程中最重要的一个是扩散运输，尽管星际气体的电导率很高，但它改变了磁通量的分布。 科罗拉多大学的艾伦·兹韦贝尔（Ellen Zweibel）博士将追求两个研究项目，旨在了解星际磁场的扩散运输。 第一个项目涉及分子云中的田间强度，这会影响分子云动力学和恒星形成。 第二个项目涉及磁通量从银河磁盘中逃脱，其对银河磁场的垂直结构的影响及其对银河发电机的影响。 这些项目通过其对双摩托车漂移和湍流的共同依赖而相关。 ***