SHINE Postdoc: Understanding Solar Electron Bursts Below 1.4 keV

SHINE 博士后：了解低于 1.4 keV 的太阳电子爆发

• 批准号: 0524830
• 负责人: John Steinberg
• 金额: --
• 依托单位: Department of Energy Albuquerque Operations Office
• 依托单位国家: 美国
• 项目类别: Interagency Agreement
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-10-01 至 2006-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0524830&HistoricalAwards=false
• 关键词: SHINE; Postdoc; Understanding; Solar; Electron

The PI plans to 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 proposer 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 goals. As public outreach, the PI will provide volunteer presentations to K-12 instructors through the Los Alamos Space Science Outreach (LASSO) program, which has the goal of providing teachers with ideas and curriculum material that will help them involve more students in space science.

PI 计划研究日光层内部从太阳到地球的瞬态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。提议者在高级成分探索器 (ACE) 数据中识别出了 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，创世纪飞船观测到了 200 多个相同的事件。 PI 打算识别和编录 ACE 和 Genesis 所看到的这些电子爆发的特征，包括爆发之前、期间和之后的电子俯仰角分布宽度和能谱。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发挥着关键作用。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，以及我们对太阳喷发事件加速超热电子过程以及它们如何传播到地球的知识。因此，对高能电子的研究有助于实现 SHINE 目标。作为公共推广，PI 将通过洛斯阿拉莫斯空间科学推广 (LASSO) 计划向 K-12 教师提供志愿者演示，该计划的目标是为教师提供想法和课程材料，帮助他们让更多学生参与空间科学。