Collaborative Research: SHINE: The Geometrical and Kinematic Evolution of Interplanetary Coronal Mass Ejections

合作研究：SHINE：行星际日冕物质抛射的几何和运动学演化

• 批准号: 0849976
• 负责人: Alysha Reinard
• 金额: $ 9.96万
• 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: 2009
• 资助国家: 美国
• 起止时间: 2009-09-15 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0849976&HistoricalAwards=false
• 关键词: Collaborative; Research; SHINE; Geometrical; Kinematic

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This collaborative team plans to investigate the evolution of interplanetary coronal mass ejections (ICMEs) at large distances from the Sun. They expect to identify the reasons that existing models do not accurately describe this ICME evolution. With this knowledge, the principal investigators (PI) will either be able to improve these models with corrected boundary conditions, or develop a new model describing the geometrical and kinematic evolution of ICMEs. The team then will evaluate their resulting model as a tool for space weather forecasting. This work involves the detailed analysis of coronagraph and interplanetary data, EUV images, and in situ observations from instruments on a variety of spacecraft, including SOHO, STEREO, ACE, Coriolis, WIND, and Ulysses. The collaborators have already devised a new data-driven model with the ability to extract parameters related to CME origins (such as relative geometry and Thomson scattered intensity) from those responsible for CME evolution (such as interactions with surrounding interplanetary medium, expansion of the CME, and MHD physics). The PIs thus expect to complete the first survey of the 3D properties of CMEs and allow the classification and comparison of the parameters responsible for CME appearance and evolution. The lead PI is an NRC Fellow while the secondary PI is a female scientist and recent SHINE postdoc. This project is important for the career development of these two promising young scientists at the beginning of their careers. Their joint project offers an opportunity to improve our general understanding of CME evolution in the interplanetary medium, as well as space weather prediction capabilities. The team's new ICME model will address SHINE science goals and improve the accuracy of space weather forecasts.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。该合作团队计划调查距离太阳较远的行星际日冕物质抛射（ICME）的演变。他们希望找出现有模型不能准确描述ICME演变的原因。 有了这些知识，主要研究人员（PI）将能够改进这些模型与校正的边界条件，或开发一个新的模型描述的几何和运动学演变的ICME。 然后，该团队将评估他们的结果模型作为空间天气预报的工具。 这项工作涉及日冕和行星际数据，EUV图像的详细分析，以及各种航天器上的仪器的现场观测，包括SOHO，STEREO，ACE，Coriolis，WIND和ESTA。合作者已经设计了一个新的数据驱动模型，能够从负责CME演化的参数（例如与周围行星际介质的相互作用，CME的膨胀和MHD物理）中提取与CME起源相关的参数（例如相对几何形状和汤姆逊散射强度）。 因此，PI希望完成CME三维特性的首次调查，并允许对CME外观和演变的参数进行分类和比较。首席PI是NRC研究员，而次要PI是一位女性科学家和最近的SHINE博士后。 该项目对这两位有前途的年轻科学家在职业生涯初期的职业发展非常重要。 他们的联合项目提供了一个机会，以提高我们对行星际介质中CME演变的一般理解，以及空间天气预测能力。 该团队的新ICME模型将解决SHINE的科学目标，并提高空间天气预报的准确性。