The Expanded Owens Valley Solar Array as a Community Facility

扩建后的欧文斯谷太阳能电池阵列作为社区设施

• 批准号: 2130832
• 负责人: Dale Gary
• 金额: $ 172.03万
• 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=2130832&HistoricalAwards=false
• 关键词: Expanded; Owens; Valley; Solar; Array

This award is funded in whole or in part under the American Rescue Plan Act of 2021 (Public Law 117-2).Solar flares and active regions in the solar atmosphere represent two phenomena that are key to better understanding of initiation mechanisms of solar activity. The evolving magnetic fields power explosive releases of the solar energy, and their measurements are therefore of utmost importance for understanding and forecasting of solar activity that impact the Earth and near-Earth space environment (Space Weather). The work will support operations and research conducted at the Expanded Owens Valley Solar Array (EOVSA). EOVSA is the US sole solar-dedicated radio facility with the capability to provide routine spectral imaging of the solar activity and directly measure the solar magnetic fields in 3D. The recently passed bipartisan PROSWIFT Act (Promoting Research and Observations of Space Weather to Improve the Forecasting of Tomorrow) calls, among other things, for "sustaining ground-based observational capability" including "maintain and improve ground-based observations of the Sun." The work directly addresses this call by providing solar radio data during the rising phase of Solar Cycle 25. This work will also develop the mathematical framework to deduce information about solar environment from the currently unutilized polarized data, which will provide key information for both active region structure and theoretical understanding of particle acceleration in solar flares. Further, this project will improve image reconstruction techniques by more accurately accounting for differential solar rotation, which will greatly enhance the capability to image solar flares and active regions. This project will stimulate integration of research and education by directly supporting several graduate students at the New Jersey Institute of Technology and the University of California Berkeley who will be responsible for EOVSA operations on a rotating basis as well as develop STEM workforce by supporting and involving students and early-career postdoctoral researcher.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.

该奖项全部或部分由《2021年美国救援计划法案》（公法117-2）资助。太阳耀斑和太阳大气中的活动区是更好地理解太阳活动起始机制的两个关键现象。不断变化的磁场为太阳能量的爆炸性释放提供动力，因此对它们的测量对于理解和预测影响地球和近地空间环境的太阳活动（空间天气）至关重要。这项工作将支持扩展欧文斯谷太阳能阵列（EOVSA）的操作和研究。EOVSA是美国唯一的太阳能专用无线电设施，能够提供太阳活动的常规光谱成像，并直接测量太阳磁场的3D。最近两党通过的PROSWIFT法案（促进太空天气的研究和观测，以提高对未来的预测）要求“维持地面观测能力”，其中包括“维持和改善对太阳的地面观测”。这项工作通过提供第25太阳周期上升阶段的太阳无线电数据，直接解决了这一问题。这项工作还将发展数学框架，从目前未利用的极化数据中推断太阳环境信息，这将为太阳耀斑活动区域结构和粒子加速的理论理解提供关键信息。此外，该项目将通过更准确地计算太阳自转的差异来改进图像重建技术，这将大大提高太阳耀斑和活动区域的成像能力。该项目将通过直接支持新泽西理工学院和加州大学伯克利分校的几名研究生来促进研究和教育的整合，这些研究生将轮流负责EOVSA的运营，并通过支持和参与学生和早期职业博士后研究人员来发展STEM劳动力。该奖项反映了美国国家科学基金会的法定使命，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

Coronal Magnetic Field Measurements along a Partially Erupting Filament in a Solar Flare

• DOI: 10.3847/1538-4357/ac2f99
• 发表时间: 2021-10
• 期刊: The Astrophysical Journal
• 作者: Yuqian Wei;B. Chen 陈;Sijie 思捷 Yu 余;Haimin Wang;J. Jing;D. Gary

Data-constrained Solar Modeling with GX Simulator

使用 GX Simulator 进行数据约束太阳能建模

• DOI: 10.3847/1538-4365/acd343
• 发表时间: 2023
• 期刊: The Astrophysical Journal Supplement Series
• 作者: Nita, Gelu M.;Fleishman, Gregory D.;Kuznetsov, Alexey A.;Anfinogentov, Sergey A.;Stupishin, Alexey G.;Kontar, Eduard P.;Schonfeld, Samuel J.;Klimchuk, James A.;Gary, Dale E.
• 通讯作者: Gary, Dale E.

Implications of Flat Optically Thick Microwave Spectra in Solar Flares for Source Size and Morphology

• DOI: 10.3847/1538-4357/ac0fdb
• 发表时间: 2021-07
• 期刊: The Astrophysical Journal
• 作者: Shaheda Begum Shaik;D. Gary

Implications for Additional Plasma Heating Driving the Extreme-ultraviolet Late Phase of a Solar Flare with Microwave Imaging Spectroscopy

• DOI: 10.3847/1538-4357/ac6ce3
• 发表时间: 2022-05
• 期刊: The Astrophysical Journal
• 作者: Jiale Zhang;Bin Chen;Sijie Yu;H. Tian;Yuqian Wei;Hechao Chen;Guangyu Tan;Yingjie Luo;Xingyao Chen

The Solar Origin of an In Situ Type III Radio Burst Event

原位 III 型射电爆发事件的太阳起源

• DOI: 10.3847/1538-4357/ace904
• 发表时间: 2023
• 期刊: The Astrophysical Journal
• 作者: Wang 王, Meiqi 美祺;Chen 陈, Bin 彬.;Yu 余, Sijie 思捷;Gary, Dale E.;Lee, Jeongwoo;Wang, Haimin;Cohen, Christina
• 通讯作者: Cohen, Christina