EAGER: Influence of Coronal Magnetic Structure and Environment of Solar Filaments on the Early Deflection of Coronal Mass Ejections (CMEs): New Observations and Modeling

EAGER：日冕磁结构和太阳细丝环境对日冕物质抛射（CME）早期偏转的影响：新的观测和建模

• 批准号: 1853530
• 负责人: Marco Velli
• 金额: $ 15.38万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-11-01 至 2020-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1853530&HistoricalAwards=false
• 关键词: EAGER; Influence; Coronal; Magnetic; Structure

This one-year EAGER project targets a topic of paramount importance for Space Weather and improved understanding of solar-terrestrial relations, namely the early stages of filament eruptions on the Sun and the formation and propagation of Coronal Mass Ejections (CMEs) in the low solar corona. The project comprises an exploratory work which, if proven successful, could lead to fundamental improvement in our scientific understanding of the physical systems from where CMEs originate and develop, by applying novel analyses to existing observations and applying simple (compared to full coronal 3-D MHD simulations) modeling techniques. Furthermore, the project could lead to the development of a new type of advanced numerical algorithms that would allow a much better classification of solar prominences and filaments -- the progenitors of CMEs -- in terms of their field structure and early evolution in the solar atmosphere, deflection in the solar corona, and final geo-effectiveness or planetary effectiveness. The new approach advocated in this project will also enhance space weather forecasting capabilities by reducing the uncertainty in the initial conditions for CME formation, eruption and propagation in the low corona that will prove advantageous to all existing and developing Space Weather modeling frameworks.This one-year EAGER project builds upon an extensive observational as well as analytical and numerical modeling carried out by the project team to provide a guide for the Space Weather community forecasters. The project will result in initial conditions that are crucial for the development of intermediate models, which can be used as quick ways of predicting the field of CMEs and its early deflection. The project team is devoted to public outreach and the expansion of knowledge of space weather via public seminars and talks at high-school and secondary-school level, providing leadership examples and motivating women and minorities to undertake studies in STEM education fields. The PI will mentor a graduate student on CMEs and Solar Eruptions at UCLA. The research and EPO agenda of this EAGER 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.

这一为期一年的EAGER项目的目标是一个对空间气象和增进对日地关系的了解至关重要的专题，即太阳暗条爆发的早期阶段以及低日冕中日冕物质抛射的形成和传播。 该项目包括一个探索性的工作，如果被证明是成功的，可能会导致我们的物理系统的科学理解CME起源和发展的根本改善，通过应用新的分析，现有的观测和应用简单的（相比全冠3-D MHD模拟）建模技术。 此外，该项目还可导致开发一种新型的先进数值算法，从而能够根据太阳磁场结构和太阳大气层的早期演变、日冕的偏转以及最终的地球效应或行星效应，更好地对太阳磁场和暗条-日冕物质抛射的前身-进行分类。 该项目倡导的新方法还将通过减少日冕物质抛射形成初始条件的不确定性，在低日冕的喷发和传播，将证明有利于所有现有的和发展中的空间天气建模框架。这一个-EAGER项目是一个为期一年的项目，它建立在项目小组进行的广泛的观测、分析和数值模拟的基础上，为我们提供指导空间天气社区预报员。 该项目将产生对开发中间模型至关重要的初始条件，这些模型可用作预测日冕物质抛射场及其早期偏转的快速方法。 该项目小组致力于通过在高中和中学一级举办公共研讨会和讲座，开展公共宣传和扩大空间气象知识，提供领导力范例，并激励妇女和少数群体在科学、技术、工程和数学教育领域开展研究。 PI将在加州大学洛杉矶分校指导一名研究生进行CME和太阳爆发。 EAGER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

Large-scale Magnetic Funnels in the Solar Corona

• DOI: 10.3847/1538-4357/ab017c
• 发表时间: 2016-05
• 期刊: The Astrophysical Journal
• 作者: O. Panasenco;M. Velli;A. Panasenco

The Role of Alfvén Wave Dynamics on the Large-scale Properties of the Solar Wind: Comparing an MHD Simulation with Parker Solar Probe E1 Data

阿尔文波动力学对太阳风大尺度特性的作用：MHD 模拟与帕克太阳探测器 E1 数据的比较

• DOI: 10.3847/1538-4365/ab4fef
• 发表时间: 2020
• 期刊: The Astrophysical Journal Supplement Series
• 作者: Réville, Victor;Velli, Marco;Panasenco, Olga;Tenerani, Anna;Shi, Chen;Badman, Samuel T.;Bale, Stuart D.;Kasper, J. C.;Stevens, Michael L.;Korreck, Kelly E.
• 通讯作者: Korreck, Kelly E.

Magnetic Connectivity of the Ecliptic Plane within 0.5 au: Potential Field Source Surface Modeling of the First Parker Solar Probe Encounter

• DOI: 10.3847/1538-4365/ab4da7
• 发表时间: 2020-02-01
• 期刊: ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
• 影响因子: 8.7
• 作者: Badman, Samuel T.;Bale, Stuart D.;Whittlesey, Phyllis L.
• 通讯作者: Whittlesey, Phyllis L.