Physics of Solar Radio Emission Process

太阳射电发射过程物理学

• 批准号: 0940985
• 负责人: Peter Yoon
• 金额: $ 17.41万
• 依托单位: University of Maryland, College Park
• 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: 2010-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0940985&HistoricalAwards=false
• 关键词: Physics; Solar; Radio; Emission; Process

The principal investigator (PI) plans to investigate the detailed physics of the radio emission from solar Type II and Type III radio bursts. He hopes to advance the basic understanding of nonlinear plasma behavior by solving the complete set of electromagnetic weak turbulence kinetic equations for electrons, ions, Langmuir turbulence, ion-acoustic turbulence, and electromagnetic transverse radiation. Since such a complete solution has never before been obtained, the PI asserts that such a result will lead to fundamental breakthroughs in nonlinear plasma physics. The PI plans to study the time scale of the plasma emission, the intensities for fundamental and harmonic emissions, and the radiation beaming patterns for fundamental and harmonic emissions. He will focus on determining which of the two competing processes for fundamental emission (decay or scattering) is dominant.Since Type II bursts can provide a view of coronal mass ejections (CMEs) that complements the traditional coronagraph, and Type III bursts are often associated with the CME lift-off, these two classes of solar radio emission are important for the space weather research. Both emission signatures can serve as early warnings for CMEs and also as diagnostic tools for space weather forecasts. The PI also states that the results of this project will aid space weather modelers and observers. This activity will provide for the education and training of a graduate student and promote international scientific collaboration with researcher collaborators in Brazil.

首席研究员（PI）计划调查太阳II型和III型射电暴射电发射的详细物理过程。 他希望通过解决电子，离子，朗缪尔湍流，离子声湍流和电磁横向辐射的电磁弱湍流动力学方程的完整集合，推进非线性等离子体行为的基本理解。 由于这样一个完整的解决方案以前从未获得过，PI断言，这样的结果将导致非线性等离子体物理学的根本突破。 PI计划研究等离子体发射的时间尺度，基波和谐波发射的强度，以及基波和谐波发射的辐射光束模式。 由于II型爆发可以提供日冕物质抛射（CME）的视图，补充了传统的日冕物质抛射，而III型爆发通常与CME升空有关，因此这两类太阳射电辐射对空间天气研究非常重要。 这两种排放特征都可以作为日冕物质抛射的早期预警，也可以作为空间天气预报的诊断工具。PI还指出，该项目的结果将有助于空间气象建模者和观察者。 这项活动将为一名研究生提供教育和培训，并促进与巴西的研究合作者的国际科学合作。