Imaging Spectroscopy of Coherent Radio Bursts on the Sun: a New Probe of Magnetic Energy Release

太阳相干射电爆发的成像光谱：磁能释放的新探测器

• 批准号: 1010652
• 负责人: John Hawley
• 金额: $ 13.52万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-06-15 至 2014-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1010652&HistoricalAwards=false
• 关键词: Imaging; Spectroscopy; Coherent; Radio; Bursts

This project will solely support a promising graduate student and form the basis of his Ph.D. thesis at the University of Virginia. The senior proposers will supervise this student in his study of coherent radio bursts as a diagnostic of magnetic energy release in solar flares. Under their guidance, the student will utilize state-of-the-art radio instrumentation to make fundamentally new observations of coherent bursts from flares, in the form of dynamic broadband imaging spectroscopy at decimeter wavelengths. These observations will allow the locations of flare magnetic energy release to be pinpointed, and the temporal and spatial evolution of these locations to be tracked. Depending on the particular type of radio burst, such observations can place constraints on the magnetic field and plasma density in and around the energy release sites of solar flares. The new technique of broadband imaging spectroscopy at radio wavelengths promises to be transformative in solar physics. The proposers will exploit the newly upgraded instrumentation at the Expanded Very Large Array (EVLA, a facility of the National Radio Astronomy Observatory, or NRAO), as well as the Frequency Agile Solar Radiotelescope (FASR) Subsystem test bed array and the Owens Valley Solar Array, two university instruments operated by the New Jersey Institute of Technology at the Owens Valley Radio Observatory in California. This project will directly support the education and training of a promising PhD student and will contribute to the successful commissioning of the EVLA radiotelescope. EVLA is an extraordinary and powerful new instrument that will dramatically enhance existing research infrastructure and transform our capabilities for radio observations of the Sun. EVLA will also support a broad user community and make possible scientific studies that will have direct impact on our understanding of space weather phenomena.

该项目将仅支持有前途的研究生，并构成他的博士学位的基础。弗吉尼亚大学的论文。高级建议者将在研究相干无线电爆发的研究中监督该学生，以诊断太阳能耀斑中的磁能释放。在他们的指导下，学生将利用最先进的无线电仪器来从耀斑中对相干爆发的新观察，以动态宽带成像光谱的形式在分解仪波长下进行。这些观察结果将使火炬磁能释放的位置被精确，并可以跟踪这些位置的时间和空间演化。根据特定类型的无线电爆发类型，这种观察结果可以在太阳耀斑的能量释放位点和周围的磁场和等离子体密度上施加约束。无线电波长宽带成像光谱的新技术有望在太阳能物理学中具有变化。 The proposers will exploit the newly upgraded instrumentation at the Expanded Very Large Array (EVLA, a facility of the National Radio Astronomy Observatory, or NRAO), as well as the Frequency Agile Solar Radiotelescope (FASR) Subsystem test bed array and the Owens Valley Solar Array, two university instruments operated by the New Jersey Institute of Technology at the Owens Valley Radio Observatory in California.该项目将直接支持有前途的博士生的教育和培训，并将为EVLA RadioteleScope的成功调试做出贡献。 EVLA是一种非凡而有力的新工具，将大大增强现有的研究基础设施，并改变我们对太阳无线电观察的能力。 EVLA还将支持广泛的用户社区，并提供可能的科学研究，这将直接影响我们对太空天气现象的理解。