Collaborative Research: SHINE: Solar Longitude Dependence of Solar Energetic Particle Events

合作研究：SHINE：太阳高能粒子事件的太阳经度依赖性

• 批准号: 0454428
• 负责人: Christina Cohen
• 金额: $ 16.35万
• 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: 2005
• 资助国家: 美国
• 起止时间: 2005-01-01 至 2009-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0454428&HistoricalAwards=false
• 关键词: Collaborative; Research; SHINE; Solar; Longitude

This proposal includes seven collaborators and will systematically examine the longitude dependence of solar energetic particle (SEP) characteristics through studying: (1) solar data from SOHO, TRACE, Yohkoh, and RHESSI; (2) SEP data from the Solar Isotope Spectrometer (SIS) and the Ultra Low Energy Isotope Spectrometer (ULEIS), both on the Advanced Composition Explorer (ACE) spacecraft; and (3) radio data from Wind/WAVES, Culgoora, and Bruny Island, Australia. Identified SEP events will be characterized according to several criteria, including elemental abundances and ratios measured at a range of MeV energies per nucleon. Radio signatures, shock transit speeds, CME speeds, flare magnitudes, flare durations, flare longitude/magnetic connections (and other relevant parameters) will then be examined in terms of this characterization. Particular focus will be placed on radio type III bursts as indications of open magnetic field lines and the solar connection to the identified flares of interest, as determined by the potential field source surface (PFSS) model. How the characterization of the SEP events depends on solar longitude (accounting for the magnetic connection) will be important in evaluating and constraining any theory attempting to provide explanations for the large variation in the energy-dependent elemental composition observed in SEP events. This effort will help quantify the plausibility of the currently competing hypotheses.Results will be disseminated to the broader community through campaign web sites, peer-reviewed scientific journals, and public newsletters, as well as through future SHINE meetings, where students are especially encouraged (and often funded) to attend. The benefit of this research to society is strongly related to the increasing need to predict space weather and the SEP-related radiation hazards faced by astronauts, sensitive space equipment, and even some commercial airline flights. In particular, SEP longitude dependence is crucial for forecasting the effects at locations far from the Sun-Earth line, as will be necessary within NASA's new Space Exploration Initiative. In order to make useful space weather predictions at any location, understanding the connection between what is observed remotely at the Sun and the resulting SEP event is critical. The proposed research furthers this endeavor in an area of currently vigorous debate. This proposal employs two women (one being the PI) and includes funds for training an undergraduate student. Many of the collaborators have a strong history of collaboration in the fields of radio spectrometry, solar physics, and particle physics, as well as in giving presentations to young scientists and students at colleges, high schools, and middle schools.

该建议包括七个合作者，并将系统地检查太阳能粒子（SEP）特征的经度依赖性：（1）来自SOHO，TRACE，YOHKOH和RHESSI的太阳数据； （2）来自太阳能同位素光谱仪（SIS）和超低能同位素光谱仪（ULEIS）的SEP数据，均在高级组成探索器（ACE）航天器上； （3）来自Culgoora风/波的无线电数据和澳大利亚Bruny Island。确定的SEP事件将根据几个标准进行表征，包括在每个核子的MEV能量范围内测得的元素丰度和比率。然后将根据此特征来检查无线电特征，电击传输速度，CME速度，耀斑幅度，耀斑持续时间，耀斑经度/磁连接（和其他相关参数）。根据电势源表面（PFSS）模型确定，将特别放在无线电III型爆发上，作为开放磁场线的指示以及与所识别耀斑的太阳连接。 SEP事件的表征如何取决于太阳经度（考虑磁连接）对于评估和限制试图为SEP事件中观察到的能量依赖性元素组成的较大差异的任何理论都重要。这项努力将有助于量化当前竞争的假设的合理性。通过竞选网站，经过同行评审的科学期刊和公共通讯以及未来的Shine Meetings，将通过竞选网站，经过同行评审的科学期刊和公共新闻通讯传播到更广泛的社区，并特别鼓励学生参加（并经常资助）参加。这项研究对社会的好处与预测太空天气以及宇航员，敏感太空设备甚至一些商业航空公司航班所面临的SEP相关辐射危害的需求越来越密切。特别是，Sep经度依赖性对于在NASA的新空间探索计划中必不可少的预测远离太阳线的效果至关重要。为了在任何位置进行有用的空间天气预测，了解在太阳下远程观察到的联系与由此产生的SEP事件之间的联系至关重要。拟议的研究进一步促进了目前辩论的领域。该提案雇用了两名妇女（一名是PI），包括用于培训本科生的资金。许多合作者在无线电光谱，太阳能物理和粒子物理学领域以及向大学，高中和中学的年轻科学家和学生提供演讲方面都有很强的合作历史。