CAREER: Probing Energy Release in Solar Explosive Events with New Generation Radio Telescopes

职业：用新一代射电望远镜探测太阳爆炸事件中的能量释放

• 批准号: 1654382
• 负责人: Bin Chen
• 金额: $ 71.74万
• 依托单位: New Jersey Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-01-15 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1654382&HistoricalAwards=false
• 关键词: CAREER; Probing; Energy; Release; Solar

The research program of this five-year CAREER project has the potential to significantly advance knowledge on key topics in heliophysics and astrophysics, namely the physical mechanism(s) responsible for releasing a large amount of energy catastrophically and accelerating charged particles to high energies in a short timescale. By developing unique methods enabled by the new radio observing technique, the project will fill a major gap in the knowledge of the location and properties of the energy release site by tracing accelerated electrons, mapping dynamic shocks, as well as deriving energetic electron distribution and magnetic field in and around the flaring region. It is expected that the knowledge gained from this project will impact not only the field of solar physics, but also many other heliophysical and astrophysical contexts where similar physical processes occur in the magnetized plasma.This CAREER project will utilize a new generation of radio telescopes, including the Expanded Owens Valley Solar Array and the Jansky Very Large Array, to study solar explosions with a fundamentally new technique: broadband radio dynamic imaging spectropolarimetry. This technique enables the capability of obtaining a high-resolution radio spectrum from every pixel of a radio image at a cadence of tens of milliseconds. Complemented by multi-wavelength data in optical, ultraviolet, and X-rays, these radio observations will provide revolutionarily new diagnostic methods to probe fundamental physical processes behind these explosive events. Topics of the proposed research project will be integrated into teaching and mentoring students at all levels. A Solar Radio Laboratory (SRL) will be built on campus to serve as a new teaching facility for student education and hands-on training in both physics and engineering. The PI will also contribute to the development of a new graduate curriculum in solar and space physics under the framework of the multi-institutional Hale Collaborative Graduate Education (COLLAGE) program. The PI will create a course module for the COLLAGE program by integrating his specialties in high-energy solar physics, current research topics, and hands-on teaching/training resources enabled by the SRL.Improved knowledge on the origin of solar explosive events is critical to understanding the basic science needed to meet the goals of the National Space Weather Strategy and Action Plan, which aims to develop tools to forecast space weather and mitigate its impacts. The experience gained from this project will also form the basis for developing the Frequency Agile Solar Radiotelescope (FASR), which is a transformative solar radio telescope recommended by two decadal surveys for construction in this decade. The educational component of this program will educate and train students at all levels in cutting-edge observations, instrumentation, and modeling through the SRL platform. The development of the Hale COLLAGE Program will foster the growth of next-generation solar and space physicists by providing effective education and hands-on training for students at NJIT and other institutions. The research and EPO agenda of this CAREER project supports the Strategic Goals of the AGS Division in discovery, learning, diversity, and interdisciplinary research.

这项为期五年的CAREER项目的研究计划有可能显著推进太阳物理学和天体物理学的关键主题的知识，即负责在短时间内灾难性地释放大量能量并加速带电粒子到高能的物理机制。通过开发新的无线电观测技术所支持的独特方法，该项目将通过跟踪加速电子，绘制动态冲击，以及推导耀斑区域及其周围的高能电子分布和磁场，填补能量释放点位置和属性知识方面的主要空白。预计从这个项目中获得的知识不仅会影响太阳物理学领域，还会影响许多其他太阳物理学和天体物理学领域，在这些领域中，磁化等离子体中发生了类似的物理过程。这个CAREER项目将利用新一代射电望远镜，包括扩展欧文斯谷太阳能阵列和扬斯基超大阵列，用一种全新的技术来研究太阳爆炸：宽带无线电动态成像光谱偏振法。该技术能够以几十毫秒的节奏从无线电图像的每个像素获得高分辨率无线电频谱。在光学、紫外线和x射线的多波长数据的补充下，这些射电观测将为探测这些爆炸事件背后的基本物理过程提供革命性的新诊断方法。建议研究项目的主题将整合到各级学生的教学和指导中。一个太阳无线电实验室（SRL）将在校园内建成，作为一个新的教学设施，为学生提供物理和工程方面的教育和实践培训。PI还将在多机构Hale协作研究生教育（COLLAGE）计划的框架下为太阳能和空间物理学的新研究生课程的开发做出贡献。PI将通过整合他在高能太阳物理学方面的专长、当前的研究课题和SRL提供的实践教学/培训资源，为拼贴计划创建一个课程模块。提高对太阳爆炸事件起源的认识对于理解实现国家空间天气战略和行动计划目标所需的基础科学至关重要，该战略和行动计划旨在开发预测空间天气和减轻其影响的工具。从这个项目中获得的经验也将成为开发频率敏捷太阳射电望远镜（FASR）的基础，FASR是一个变革性的太阳射电望远镜，由两个十年调查推荐在本十年中建造。该计划的教育部分将通过SRL平台教育和培训各个级别的学生进行尖端观测、仪器和建模。海尔拼贴计划的发展将通过为新泽西理工大学和其他机构的学生提供有效的教育和实践培训，促进下一代太阳能和空间物理学家的成长。该CAREER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。

项目成果

An overall view of temperature oscillations in the solar chromosphere with ALMA

• DOI: 10.1098/rsta.2020.0174
• 发表时间: 2020-10
• 期刊: Philosophical Transactions of the Royal Society A
• 作者: S. Jafarzadeh;S. Wedemeyer;B. Fleck;M. Stangalini;D. Jess;R. Morton;M. Szydlarski;V. Henriques;X. Zhu;T. Wiegelmann;J. C. Guevara Gómez;S. Grant;B. Chen;K. Reardon;S. White

The origin of underdense plasma downflows associated with magnetic reconnection in solar flares

• DOI: 10.1038/s41550-021-01570-2
• 发表时间: 2021-11
• 期刊: Nature Astronomy
• 影响因子: 14.1
• 作者: Chengcai Shen;Bin Chen;K. Reeves;Sijie Yu;V. Polito;Xiao-yang Xie

Dynamic Spectral Imaging of Decimetric Fiber Bursts in an Eruptive Solar Flare

太阳耀斑爆发中分米纤维爆发的动态光谱成像

• DOI: 10.3847/1538-4357/aa8ee5
• 发表时间: 2017
• 期刊: The Astrophysical Journal
• 作者: Wang, Zhitao;Chen, Bin;Gary, Dale E.
• 通讯作者: Gary, Dale E.

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

Energetic Electron Distribution of the Coronal Acceleration Region: First Results from Joint Microwave and Hard X-Ray Imaging Spectroscopy

• DOI: 10.3847/2041-8213/abe471
• 发表时间: 2021-02-01
• 期刊: ASTROPHYSICAL JOURNAL LETTERS
• 影响因子: 7.9
• 作者: Chen, Bin;Battaglia, Marina;Glesener, Lindsay
• 通讯作者: Glesener, Lindsay