Using Remote Sensing and In-situ Observations to Advance Numerical MagnetoHydroDynamic (MHD) Simulations of Coronal Mass Ejection Eruptions

利用遥感和现场观测推进日冕物质抛射喷发的磁流体动力学 (MHD) 数值模拟

• 批准号: 1851945
• 负责人: Benjamin Lynch
• 金额: $ 58.54万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-05-15 至 2022-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1851945&HistoricalAwards=false
• 关键词: Using; Remote; Sensing; situ; Observations

Eruptive solar flares and Coronal Mass Ejections (or CMEs) are of critical importance for space weather forecasting. This three-year project encompasses a number of the emerging research directions outlined in the recent "Roadmap for Reliable Ensemble Forecasting of the Sun-Earth System" report (Nita et al., 2018). Additionally, the work will advance discovery, while promoting teaching, training, and learning. Furthermore, it will enhance the infrastructure for research and education through networks and partnerships. The project team envisions that a significant portion of the work will be carried out by a postdoctoral research scholar at the SSL of the University of California at Berkeley. The Principal Investigator (PI) and Co-PI have experience mentoring and supervising student researchers and the location of the research -- the UC-Berkeley -- presents the opportunity to involve highly-qualified undergraduate and graduate students in space physics research. Results from the work will be disseminated broadly as the PI, Co-PI, and postdoctoral scholar will present their results at national and international scientific meetings (including the National Science Foundation (NSF)'s SHINE Workshop), in colloquia and seminars, and publish them in peer-reviewed journals.This three-year project will combine data analysis, modeling, and magnetohydrodynamic (MHD) simulations in order to further our numerical capabilities to model the initiation and evolution of Coronal Mass Ejections (CMEs) on the basis of a first-principles (FP) description of the eruption processes. The project team will examine the corona-to-heliosphere connection of CMEs via their magnetic field and plasma dynamics and the distribution and evolution of plasma heating in the ejecta material and surrounding corona during the eruption process. The project builds upon the innovative and proven foundation of the team's prior work investigating the global structure of enhanced composition within ICMEs, which revealed an intriguing, yet unexplained statistical relationship with the geo-effectiveness of ICMEs. The project is ideally suited for the NSF's Solar-Terrestrial Research (STR) program as it combines the study of FP CME initiation and evolution with observationally-constrained, empirical coronal heating parameterizations in order to generate modeling outputs that can be directly compared to remote and in-situ observations of coronal plasma diagnostics and CME/ICME field and plasma structures. The research and EPO agenda of this project supports the Strategic Goals of the AGS Division in discovery, learning, diversity, and interdisciplinary research.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

爆发性太阳耀斑和日冕物质抛射（或CME）对空间天气预报至关重要。 这个为期三年的项目包括最近的“太阳-地球系统可靠环绕预报路线图”报告（Nita等人，2018年）。 此外，这项工作将推进发现，同时促进教学、培训和学习。 此外，它将通过网络和伙伴关系加强研究和教育基础设施。 项目小组设想，这项工作的很大一部分将由加州大学伯克利分校SSL的博士后研究学者进行。 主要研究员和共同研究员具有指导和监督学生研究人员的经验，研究地点-加州大学伯克利分校-为高素质的本科生和研究生参与空间物理研究提供了机会。 这项工作的结果将广泛传播，因为PI，Co-PI和博士后学者将在国家和国际科学会议上展示他们的结果（包括美国国家科学基金会（NSF）的SHINE研讨会），在座谈会和研讨会上，并发表在同行评审的期刊上。这个为期三年的项目将结合联合收割机数据分析，建模，和磁流体动力学（MHD）模拟，以进一步提高我们的数值模拟能力的启动和演化的日冕物质抛射（CME）的基础上的第一性原理（FP）描述的喷发过程。 项目小组将通过CME的磁场和等离子体动力学以及喷发过程中喷出物材料和周围日冕中等离子体加热的分布和演变来研究日冕与日光层的联系。 该项目建立在该团队先前调查ICME内增强成分的全球结构的创新和经验证的基础上，该工作揭示了与ICME地理有效性的有趣但无法解释的统计关系。 该项目非常适合美国国家科学基金会的日地研究（STR）计划，因为它结合了FP CME的启动和演化的研究与观测约束，经验日冕加热参数化，以生成建模输出，可以直接与远程和现场观测日冕等离子体诊断和CME/ICME场和等离子体结构。 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。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

A Model for the Coupled Eruption of a Pseudostreamer and Helmet Streamer

• DOI: 10.3847/1538-4357/abd9ca
• 发表时间: 2021-01
• 期刊: The Astrophysical Journal
• 作者: P. Wyper;S. Antiochos;C. DeVore;B. Lynch;J. Karpen;P. Kumar

Toward Improved Understanding of Magnetic Fields Participating in Solar Flares: Statistical Analysis of Magnetic Fields within Flare Ribbons

• DOI: 10.3847/1538-4357/ac3af3
• 发表时间: 2021-11
• 期刊: The Astrophysical Journal
• 作者: M. Kazachenko;B. Lynch;A. Savcheva;Xudong Sun;B. Welsch

The Coronal Global Evolutionary Model: Using HMI Vector Magnetogram and Doppler Data to Determine Coronal Magnetic Field Evolution

• DOI: 10.3847/1538-4365/abb3fb
• 发表时间: 2020-06
• 期刊: The Astrophysical Journal Supplement Series
• 作者: J. Hoeksema;W. Abbett;D. Bercik;M. Cheung;M. DeRosa;G. Fisher;K. Hayashi;M. Kazachenko

Electron acceleration and radio emission following the early interaction of two coronal mass ejections

• DOI: 10.1051/0004-6361/202038801
• 发表时间: 2020-08
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: D. Morosan;E. Palmerio;J. Räsänen;E. Kilpua;J. Magdalenić;B. Lynch;A. Kumari;J. Pomoell;M. Palmroth

Predicting the Magnetic Fields of a Stealth CME Detected by Parker Solar Probe at 0.5 au

预测帕克太阳探测器 0.5 天文单位探测到的隐形日冕物质抛射的磁场

• DOI: 10.3847/1538-4357/ac25f4
• 发表时间: 2021
• 期刊: The Astrophysical Journal
• 作者: Palmerio, Erika;Kay, Christina;Al-Haddad, Nada;Lynch, Benjamin J.;Yu, Wenyuan;Stevens, Michael L.;Pal, Sanchita;Lee, Christina O.
• 通讯作者: Lee, Christina O.