Advancing Understanding of Solar Flares With Microwave Imaging Spectroscopy

利用微波成像光谱增进对太阳耀斑的了解

• 批准号: 2121632
• 负责人: Gregory Fleishman
• 金额: $ 56.49万
• 依托单位: New Jersey Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2121632&HistoricalAwards=false
• 关键词: Advancing; Understanding; Solar; Flares; Microwave

Solar flares are the largest explosions in the solar system that release huge amounts of energy. Flares are observed as transient brightenings throughout the electromagnetic spectrum, lasting from a few seconds to hours. The way that this energy release occurs is poorly understood. This project will utilize 3D solar flare modeling and new observational data from the Expanded Owens Valley Solar Array (EOVSA) to better understand how magnetic reconnection leads to the release of magnetic energy and particle acceleration from solar flares. Software tools will be developed and upgraded and used to teach high school interns about solar physics and for graduate physics courses.The project capitalizes on the unique ability of EOVSA to quantify evolution of solar flares by dynamically measuring coronal magnetic fields along with the thermal and nonthermal electron distributions with high spatial and temporal resolution. The following fundamental science goals will be addressed: (i) to understand and quantify the dynamics of solar flares of varying types, with an emphasis on the 3D spatial distribution and evolution of the coronal magnetic field and nonthermal particles; (ii) to obtain new fundamental knowledge on universal physical processes occurring on the Sun such as magnetic reconnection, particle acceleration and transport, and plasma heating. The team will provide open access to the research products to scientists and the public. The work utilizes new microwave imaging data from the EOVSA, data from other ground-based instruments, and data from the latest space missions, coupled with advanced modeling and forward-fitting, to obtain the three-dimensional magnetic field and particle distributions in flaring loops.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.

太阳耀斑是太阳系中最大的爆炸，可释放大量能量。在整个电磁频谱中观察到耀斑为瞬态亮丽，持续几秒钟到几个小时。这种能量释放的方式对待很鲜为人知。该项目将利用来自扩展的Owens Valley太阳能阵列（EOVSA）的3D太阳耀斑建模和新的观察数据，以更好地了解磁重新连接如何导致磁性能和颗粒加速器从太阳能发射释放。软件工具将被开发和升级，并用于教高中实习生有关太阳能物理和研究生物理课程的信息。该项目通过动态测量冠状磁场以及高空间和时间分布的热量和非热电学分布来量化EOVSA量化太阳能耀斑演变的独特能力。将解决以下基本科学目标：（i）理解和量化不同类型的太阳耀斑的动力学，重点是3D空间分布以及冠状磁场和非热颗粒的演变； （ii）获得有关在太阳上发生的通用物理过程的新基本知识，例如磁重新连接，颗粒加速和运输以及等离子体加热。该团队将向科学家和公众开放对研究产品的开放访问。这项工作利用来自EOVSA的新微波成像数据，来自其他地面仪器的数据以及最新的空间任务的数据，再加上高级建模和前进的模型和前进，以获得三维磁场和弹性循环中的分布。该奖项奖励NSF的法定任务，并通过评估师的构成师的身份反映了依据的依据，并反映了构成的依据。

项目成果

Ultimate Fast Gyrosynchrotron Codes

终极快速陀螺同步加速器代码

• DOI: 10.3847/1538-4357/ac29c0
• 发表时间: 2021
• 期刊: The Astrophysical Journal
• 作者: Kuznetsov, Alexey A.;Fleishman, Gregory D.
• 通讯作者: Fleishman, Gregory D.

What aspects of solar flares can be clarified with mm/submm observations?

• DOI: 10.3389/fspas.2022.966444
• 发表时间: 2022-09
• 期刊: IEEE Transactions on Antennas and Propagation
• 影响因子: 5.7
• 作者: G. Fleishman;J. M. Martínez Oliveros;E. Landi;L. Glesener

Prospects and challenges of numerical modeling of the Sun at millimeter wavelengths

• DOI: 10.3389/fspas.2022.967878
• 发表时间: 2022-11
• 作者: S. Wedemeyer;G. Fleishman;J. de la Cruz Rodríguez;S. Gunár;J. M. da Silva Santos;P. Antolin;J. C. Guevara Gómez;M. Szydlarski;H. Eklund

KW-Sun: The Konus-Wind Solar Flare Database in Hard X-Ray and Soft Gamma-Ray Ranges

KW-Sun：硬 X 射线和软伽马射线范围内的 Konus-Wind 太阳耀斑数据库

• DOI: 10.3847/1538-4365/ac8b87
• 发表时间: 2022
• 期刊: The Astrophysical Journal Supplement Series
• 作者: Lysenko, A. L.;Ulanov, M. V.;Kuznetsov, A. A.;Fleishman, G. D.;Frederiks, D. D.;Kashapova, L. K.;Sokolova, Z. Ya.;Svinkin, D. S.;Tsvetkova, A. E.
• 通讯作者: Tsvetkova, A. E.

Magnetic Field Re-configuration Associated With a Slow Rise Eruptive X1.2 Flare in NOAA Active Region 11944

• DOI: 10.3389/fspas.2022.816523
• 发表时间: 2022-04
• 作者: V. Yurchyshyn;Xu Yang;G. Nita;G. Fleishman;V. Abramenko;S. Inoue;E. Lim;W. Cao