SHINE Postdoc: Understanding Solar Electron Bursts Below 1.4keV

SHINE 博士后：了解太阳电子爆发低于 1.4keV

• 批准号: 0733549
• 负责人: Curt de Koning
• 金额: $ 6.87万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-07-01 至 2009-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0733549&HistoricalAwards=false
• 关键词: SHINE; Postdoc; Understanding; Solar; Electron

The PI will study the origin, acceleration, and propagation of transient solar burst electrons in the inner heliosphere from the Sun to the Earth. He also will investigate the energy spectra of electron bursts to better understand their solar origin. The PI has identified 375 impulsive solar electron burst events at suprathermal energies below 1.4 keV in the Advanced Composition Explorer (ACE) data, and he also notes that the Genesis spacecraft observed over 200 of these same events. The PI intends to identify and catalog characteristic features of these electron bursts as seen by ACE and Genesis, to include width of the electron pitch-angle distribution and energy spectrum before, during, and after the bursts.Suprathermal electrons play a key role in the plasma and energetic particle phenomena observed in the heliosphere. Detailed analysis of solar electron bursts will increase our understanding of the physics that causes variability in their energy spectrum and beam width, as well as our knowledge of the processes by which suprathermal electrons are accelerated by solar eruptive events and how they propagate to the Earth. The study of energetic electrons thus contributes to SHINE program goals. As public outreach, the PI will provide volunteer presentations to K-12 instructors, providing teachers with ideas and curriculum material that will help them involve more students in space science.

PI将研究从太阳到地球的内日光层中瞬时太阳爆发电子的起源、加速和传播。 他还将研究电子爆发的能谱，以更好地了解它们的太阳起源。PI已经在高级成分探测器（ACE）的数据中确定了375个超热能量低于1.4 keV的脉冲太阳电子爆发事件，他还指出，创世纪航天器观察到超过200个相同的事件。PI的目的是识别和编目ACE和Genesis所看到的这些电子爆发的特征，包括电子俯仰角分布的宽度和爆发之前，期间和之后的能谱。超热电子在日光层中观察到的等离子体和高能粒子现象中起着关键作用。 对太阳电子爆发的详细分析将增加我们对导致其能谱和束宽变化的物理学的理解，以及我们对太阳爆发事件加速超热电子的过程及其如何传播到地球的知识。因此，高能电子的研究有助于SHINE计划的目标。作为公共宣传，PI将为K-12教师提供志愿者演讲，为教师提供想法和课程材料，帮助他们让更多的学生参与空间科学。