Collaborative Research: SHINE: Characteristics of Solar Energetic Particle Events Resulting from Filament Eruptions

合作研究：SHINE：灯丝喷发引起的太阳能高能粒子事件的特征

• 批准号: 1622437
• 负责人: Christina Cohen
• 金额: $ 25.25万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-07-15 至 2022-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1622437&HistoricalAwards=false
• 关键词: Collaborative; Research; SHINE; Characteristics; Solar

Understanding the details of solar energetic particle (SEP) acceleration is critical for accurate predictions of space weather and potential impacts on sensitive space-based assets. This 3-year SHINE project is aimed at studying SEP events associated with filament eruptions on the Sun. The goal is to isolate and investigate SEPs accelerated at CME-driven shocks with minimal flare material contributions. The work expands on other researchers' recent results by using more instruments to cover a broader energy range and extend the analysis. The methodology involves spectral and elemental composition data analysis techniques that are well established. The dissemination of the scientific results will be made broadly to the scientific and space weather prediction communities through published articles, scientific talks, and personal communications. In addition, project results and relevant data sets will be made available via the public web pages of the ACE and STEREO Science Centers. The three project teams have excellent track record of publications, participating (often in leadership roles) in various workshops (e.g., SHINE), and attending scientific conferences. Both the team leader and a Co-PIs are under-represented minorities and funding is included for the involvement of an undergraduate student. The project will promote strong international collaborations for the benefit of advancing space weather research both in the USA and worldwide. The research plan of this 3-year SHINE project includes four main tasks. The first task is to examine the characteristics of heavy ions for previously identified events. The spectral shape variation as a function of particle species reveals characteristics of the accelerating shock, while the composition provides important clues regarding the SEP seed population. The second task is to study smaller SEP events associated with filament eruptions by using the more sensitive SEP sensors onboard ACE and STEREO. The inclusion of STEREO data alone has the potential to increase the number of events suitable for study and, in combination with near-Earth spacecraft, allows the examination of SEP characteristics as a function of longitude. The third task is to define stronger constrains on the primary acceleration region by combining calculations of the particle-release times, for both for single-and multiple-spacecraft events, with timing of the corresponding solar signatures. The fourth task is to study in detail similar filament eruption events without associated SEP events in order to identify specific features that are key to SEP generation. The project is directly relevant to the NSF's SHINE program, because it will provide important knowledge about the acceleration and transport of SEPs during solar eruptive events. Such knowledge is critical for accurate modeling and prediction of space weather conditions from the solar surface to the Earth and beyond. The research and EPO agenda of this project supports the Strategic Goals of the AGS Division in discovery, learning, diversity, and interdisciplinary research.

了解太阳高能粒子（SEP）加速的细节对于准确预测太空天气和对敏感天基资产的潜在影响至关重要。 这个为期 3 年的 SHINE 项目旨在研究与太阳灯丝喷发相关的 SEP 事件。 目标是隔离和研究在日冕物质抛射驱动的冲击下加速的 SEP，同时将耀斑材料贡献最小。 这项工作通过使用更多仪器来覆盖更广泛的能量范围并扩展分析范围，扩展了其他研究人员最近的成果。 该方法涉及成熟的光谱和元素成分数据分析技术。 科学成果将通过发表的文章、科学讲座和个人交流向科学和空间天气预报界广泛传播。 此外，项目结果和相关数据集将通过 ACE 和 STEREO 科学中心的公共网页提供。 这三个项目团队在发表论文、参与（通常担任领导角色）各种研讨会（例如 SHINE）以及参加科学会议方面拥有出色的记录。 团队领导和联合 PI 都是代表性不足的少数族裔，并且为本科生的参与提供了资金。 该项目将促进强有力的国际合作，以促进美国和全世界的空间天气研究。 SHINE项目为期3年的研究计划包括四项主要任务。 第一项任务是检查先前识别事件的重离子特征。 作为粒子种类函数的光谱形状变化揭示了加速激波的特征，而成分则提供了有关 SEP 种子种群的重要线索。 第二项任务是通过使用 ACE 和 STEREO 上更灵敏的 SEP 传感器来研究与灯丝喷发相关的较小 SEP 事件。 仅包含 STEREO 数据就有可能增加适合研究的事件数量，并且与近地航天器结合使用，可以检查 SEP 特性随经度的变化。 第三项任务是通过结合单航天器事件和多航天器事件的粒子释放时间计算以及相应太阳特征的计时来定义对主加速区域的更强约束。 第四项任务是详细研究没有相关 SEP 事件的类似灯丝喷发事件，以确定对 SEP 生成至关重要的特定特征。 该项目与 NSF 的 SHINE 计划直接相关，因为它将提供有关太阳喷发事件期间 SEP 加速和传输的重要知识。 这些知识对于准确建模和预测从太阳表面到地球及其他地方的空间天气状况至关重要。 该项目的研究和 EPO 议程支持 AGS 部门在发现、学习、多样性和跨学科研究方面的战略目标。