U.S.-France Cooperative Research: Electric Currents in Complex Active Regions and Their Relation to Solar Flares and Prominences

美法合作研究：复杂活跃区域的电流及其与太阳耀斑和日珥的关系

• 批准号: 9016779
• 负责人: Gordon Emslie
• 金额: $ 1.33万
• 依托单位: University of Alabama in Huntsville
• 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: 1991-03-01 至 1995-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9016779&HistoricalAwards=false
• 关键词: U.S.; France; Cooperative; Research; Electric

This award will support collaborative research between Dr. Marcos Machado, University of Alabama in Huntsville, and Dr. Brigitte Schmeider, Observatory of Meudon, Paris, France. The objective of the project is to investigate electric currents in complex active regions and their relation to solar flare and prominences. It is widely accepted that solar flares are due to the release of energy stored in stressed, current carrying magnetic fields. Over the past few years, it has also become clear that complex field configuration, indicating the possible interaction between impacted magnetic bipoles, are important to the trigger of flares, as well as the formation of prominences and their eruption. Field complexity and particularly energy storage are not yet completely understood within the context of flare production, but are thought to be linked to converging and shearing motions observed at photospheric levels and above. This project will focus on the detection of current buildup, using data from the Marshall Space Flight Center and Meudon Observatory, as well as proxy indicators of field line connection in the chromo- sphere and coronal levels. The investigators will emphasize the link between current buildup and the velocity field, exploiting the combined capabilities of US and French instruments. In order to obtain this goal, the observational studies will be linked with theoretical field calculations under various field conditions to infer the topology of the coronal field and its response to the current buildup.

该奖项将支持博士之间的合作研究。 位于亨茨维尔的亚拉巴马大学的马科斯马查多和博士。 布里吉特·施迈德，默东天文台，巴黎，法国。 该项目的目标是调查电力 复杂活动区的电流及其与太阳活动的关系 耀斑和辐射。 人们普遍认为，太阳耀斑是由于 释放储存在受压载流中的能量 磁场 在过去的几年里，它也成为 清除复杂的字段配置，指示 受影响的磁双极之间可能的相互作用是 对耀斑的触发和形成都很重要 以及它们的爆发。 现场复杂性和 特别是能量存储尚未完全理解 在火炬生产的背景下，但被认为是 与观测到的会聚和剪切运动有关， 光球层以上。 该项目将重点关注 电流积累的检测，使用来自 还有马歇尔太空飞行中心和默东天文台 作为染色体中场线连接的代理指示器， 球体和日冕水平。 调查人员会强调 水流的形成和速度场之间的联系， 利用美国和法国的联合力量 仪器. 为了实现这一目标，观察 研究将与理论场计算相联系 在各种现场条件下推断的拓扑结构 日冕磁场及其对电流增强的响应。