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.

了解太阳能粒子（SEP）加速度的细节对于准确预测空间天气以及对敏感空间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上的细丝爆发有关的SEP事件。 目的是在CME驱动的冲击下隔离和研究以最小的火炬材料贡献加速的SEP。 这项工作通过使用更多工具来涵盖更广泛的能量范围并扩展分析，从而扩展了其他研究人员的最新结果。 该方法涉及良好确定的光谱和元素组成数据分析技术。 科学结果的传播将通过发表的文章，科学谈判和个人沟通来广泛地向科学和太空天气预测社区作出。 此外，将通过ACE和立体科学中心的公共网页提供项目结果和相关数据集。 这三个项目团队拥有出色的出版物记录，参加了各种讲习班（例如Shine）和参加科学会议。 团队负责人和副校长的代表性不足，资金包括在本科生的参与中。 该项目将促进强大的国际合作，以便在美国和全球范围内推进太空天气研究。 这个为期3年的Shine项目的研究计划包括四个主要任务。 第一个任务是检查重离子对先前确定的事件的特征。 光谱形状变化随粒子物种的函数揭示了加速冲击的特征，而该组合物为SEP种子种群提供了重要的线索。 第二个任务是通过使用更敏感的SEP传感器ACE和立体声研究与细丝喷发相关的较小SEP事件。 仅包含立体声数据的可能性就可以增加适合研究的事件的数量，并且与近地球飞船结合使用，可以检查SEP特征作为经度的函数。 第三个任务是通过结合粒子释放时间的计算来定义对主要加速度区域的强大约束，对于单飞机事件，以及相应的太阳标志的时间安排。 第四任务是详细研究类似的丝状喷发事件，而没有相关的SEP事件，以确定特定的特征，这些特征是SEP生成的关键。 该项目与NSF的Shine计划直接相关，因为它将在太阳喷发事件中提供有关SEP的加速和运输的重要知识。 这种知识对于从太阳能表面到地球及以后的太空天气条件进行准确的建模和预测至关重要。 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。