SHINE: Turbulence and Perpendicular Ion Heating in the Corona and Solar Wind

PI将研究湍流加热在太阳风起源和动力学中的作用。他将使用“弱”和“强”湍流理论的组合来研究所谓的“准平行级联”的强度。“准平行级联产生的小尺度波具有非常高的频率，并且可以通过回旋共振引起垂直离子加热。PI还将使用高精度测试粒子计算来研究低频“准2D”湍流引起的垂直离子加热，这被认为是太阳风湍流的主要能量成分。然后，PI将这些结果合并到太阳风的一维流体模型中，该模型解决了湍流和等离子体特性的径向演化。他将通过将一维流体模型与日冕和太阳风中质子、电子、α粒子和次要离子的温度分布、温度各向异性和整体流速的观测结果进行比较来测试和验证他的理论结果。该项目涉及太阳、日光层和行星际环境（SHINE）研究计划的一个关键要素，这是为了了解太阳风加热的机制，并将其纳入全球模型，目的是再现观测到的太阳风特性。PI是SHINE社区的科学工作组组长，也是SHINE指导委员会的新成员，他帮助组织SHINE社区研讨会。他将继续积极参与新罕布什尔州（UNH）大学专门为研究生、博士后研究人员和高级本科生开设的夏季和冬季学校的讲师工作。通过为年轻科学家提供专业培训和接触太阳物理学研究的最新发展，这些专题学校促进了UNH研究和教育的整合。

The PI will investigate the role of turbulent heating in the origin and dynamics of the solar wind. He will use a combination of 'weak' and 'strong' turbulence theory to investigate the strength of the so-called "quasi-parallel cascade." The small scale waves produced by the quasi-parallel cascade have very high frequencies, and can cause perpendicular ion heating via a cyclotron resonance. The PI will also use high accuracy test particle calculations to investigate perpendicular ion heating by low frequency "quasi-2D" turbulence, which is believed to be the energetically dominant component of solar wind turbulence. The PI will then incorporate these results into a 1D fluid model of the solar wind that solves for the radial evolution of the turbulence and plasma properties. He will test and validate his theoretical results by comparing the 1D fluid model to observations of the temperature profile, temperature anisotropy, and bulk flow speeds of protons, electrons, alpha particles, and minor ions in the corona and solar wind.This project addresses a key element of the Solar, Heliospheric, and INterplanetary Environment (SHINE) research program, which is to gain an understanding of the mechanisms of solar wind heating and to incorporate them into global models, with the objective of reproducing the observed properties of the solar wind. The PI is a Science Working Group Leader for the SHINE community and a new member of the SHINE Steering Committee, where he helps organize SHINE community workshops. He will continue his active involvement as an instructor at specialized summer and winter schools for graduate students, postdoctoral researchers, and advanced undergraduate students at the University of New Hampshire (UNH). By providing young scientists with specialized training and exposure to recent developments in solar physics research, these topical schools promote the integration of research and education at UNH.