SHINE: Incorporating 3D Reduced Magnetohydrodynamics (RMHD) Turbulence Simulations and Kinetic Plasma Physics into a Two-Fluid Model of the Solar Wind

SHINE：将 3D 简化磁流体动力学 (RMHD) 湍流模拟和动力学等离子体物理学纳入太阳风的双流体模型

• 批准号: 1258998
• 负责人: Benjamin Chandran
• 金额: $ 42.87万
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-08-01 至 2017-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1258998&HistoricalAwards=false
• 关键词: SHINE; Incorporating; 3D; Reduced; Magnetohydrodynamics

With this three-year SHINE project, the researchers will explore the means by which the solar wind and Alfven-wave turbulence are affected by variations in the amplitude, wavenumber spectrum, and frequency spectrum of the waves that are launched by the Sun. The project team will also consider the effects of magnetic geometry (in particular, the degree of super-radial expansion) on the properties of turbulence and the background solar wind, which will enable them to explore the possible relevance of Alfven-wave turbulence to the heating and acceleration of both the fast solar wind and the slow solar wind. The team will compare the results obtained from numerical simulations to a wide range of observations of coronal holes and the near-Sun solar wind, including measurements of Faraday rotation, ion temperatures, and electron densities. This research project is expected to significantly advance the community's understanding of the role that Alfven-wave turbulence may play in the origin of the solar wind.During this project, the team will co-organize sessions on turbulence and the solar wind at the annual SHINE Workshop. The PI will also deliver lectures at summer schools on plasma physics and heliospheric physics for advanced undergraduate students and graduate students. The PI will incorporate results from this project into courses that he teaches at the University of New Hampshire, to expose students to current research in heliospheric physics. The project team will also share and discuss the results of this work with members of the Solar Probe Plus FIELDS and SWEAP experiments, to offer guidance as to the possible relation between future measurements from Solar Probe Plus and Alfven-wave turbulence in the solar wind. The research and EPO agenda supports the Strategic Goals of the AGS Division in discovery, learning, diversity, and interdisciplinary research.

通过这个为期三年的SHINE项目，研究人员将探索太阳风和阿尔芬波湍流受到太阳发射的波的振幅，波数谱和频谱变化影响的方式。 项目小组还将考虑磁几何形状（特别是超径向膨胀程度）对湍流和背景太阳风性质的影响，这将使他们能够探索阿尔芬波湍流与快速太阳风和慢速太阳风的加热和加速之间可能存在的相关性。 研究小组将把数值模拟得到的结果与日冕洞和近太阳太阳风的广泛观测结果进行比较，包括对法拉第旋转、离子温度和电子密度的测量。 该研究项目预计将大大推进社区对阿尔芬波湍流在太阳风起源中可能发挥的作用的理解。在该项目期间，该团队将在年度SHINE研讨会上共同组织关于湍流和太阳风的会议。 PI还将在暑期学校为高级本科生和研究生提供等离子体物理学和日光层物理学讲座。 PI将把这个项目的结果纳入他在新罕布什尔州大学教授的课程中，让学生了解日光层物理学的最新研究。项目团队还将与Solar Probe Plus FIELDS和SWEAP实验的成员分享和讨论这项工作的结果，为Solar Probe Plus未来的测量结果与太阳风中的阿尔芬波湍流之间的可能关系提供指导。 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。