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SHINE: Turbulence and Plasma Heating in the Solar Wind

闪耀：太阳风中的湍流和等离子体加热

基本信息

批准号：
0752503
负责人：
Eliot Quataert
金额：
$ 21.57万
依托单位：
University of California-Berkeley
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2008
资助国家：
美国
起止时间：
2008-04-01 至 2012-03-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0752503&HistoricalAwards=false
关键词：
SHINE Turbulence Plasma Heating Solar

项目摘要

The Principal Investigator (PI) plans to perform Magnetohydrodynamic (MHD) modeling of solar wind turbulence on scales of the ion Larmor radius, where a fluid description is less applicable and plasma kinetic effects are important. This modeling is necessary for investigating how energy in turbulent fluctuations is converted into heat. These kinetic simulations of MHD turbulence will provide quantitative predictions of how turbulence induces fluctuations in a variety of heliophysical quantities, including the magnetic field, the electric field, the plasma density, and the particle distribution function. The PI intends to compare his simulation output with in situ measurements in the solar wind. He will also study the heating of solar wind plasma through small-scale fluctuations in an MHD turbulent cascade, and will quantify the extent to which his modeled plasma heating is consistent with observations of the solar wind. This project will significantly advance the understanding of the complex connection between the turbulent fluctuations in the solar wind and the heating and acceleration of solar wind plasma by such turbulence.Graduate student and postdoctoral training will be an important part of this project. The PI will also provide public talks on a regular basis that will incorporate the results of this research and convey the scientific process to a broader audience.

主要研究者（PI）计划在离子拉莫尔半径尺度上对太阳风湍流进行磁流体动力学（MHD）建模，其中流体描述不太适用，等离子体动力学效应很重要。这种建模对于研究湍流波动中的能量如何转化为热量是必要的。这些MHD湍流的动力学模拟将提供湍流如何在各种太阳物理量，包括磁场，电场，等离子体密度和粒子分布函数的波动诱导的定量预测。PI打算将他的模拟输出与太阳风的现场测量结果进行比较。他还将通过MHD湍流级联中的小尺度波动研究太阳风等离子体的加热，并将量化他的模型等离子体加热与太阳风观测一致的程度。该项目将极大地推进对太阳风中湍流波动与太阳风等离子体被这种湍流加热和加速之间复杂联系的理解。研究生和博士后培训将是该项目的重要组成部分。PI还将定期提供公开讲座，将纳入这项研究的结果，并将科学过程传达给更广泛的受众。