A Study of Low-Latitude Pulsating Auroras During the Maaximum of Solar Cycle 22

太阳活动最大周期22期间低纬度脉动极光的研究

• 批准号: 9019839
• 负责人: John Winckler
• 金额: $ 1.39万
• 依托单位: University of Minnesota-Twin Cities
• 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: 1991-01-01 至 1992-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9019839&HistoricalAwards=false
• 关键词: Study; Low; Latitude; Pulsating; Auroras

This grant is for research in basic magnetospheric plasma physics and the nature of the aurora. In particular, the role of magnetic pulsations for the injection and removal of outer zone trapped Van Allen belt electrons will be studied. Observations of the pulsation phase of low-latitude auroral events during the maximum of solar cycle 22 using high sensitivity photometers and correlated data at Minneapolis will be continued and expanded by adding low-light-level TV images to the data set to produce permanent images of the pulsating forms. These pulsations begin at auroral breakup and often continue for many hours into the morning. This interaction is thought to be due to the interaction of Van Allen outer zone electron with cold plasma producting instabilities and precipitation.

这项拨款是为了研究基本磁层等离子体物理学和极光的性质。特别地，将研究磁脉动对外区捕获范艾伦带电子的注入和移除的作用。在明尼阿波利斯使用高灵敏度光度计和相关数据对第22太阳活动周期最大值期间低纬度极光事件脉动阶段的观测将继续进行，并通过在数据集中添加低亮度电视图像来扩展，以产生脉动形式的永久图像。这些脉动在极光破裂时开始，通常持续数小时直到早晨。这种相互作用被认为是由于范艾伦外区电子与冷等离子体的相互作用产生的不稳定性和沉淀。