CAREER: Evolution of magnetized stars

最近对我们自己的太阳以及其他恒星的观测表明，需要新的方法来模拟恒星的演化，充分考虑到恒星不可避免的磁化性质。 Pascale Garaud博士（加州大学-圣克鲁斯）将致力于建立一个考虑到磁场、旋转和所有其他相关动力学效应的多维恒星演化模型。 作为该项目的一部分，开发了一种新的数值模型，该模型将核演化方程的精确解耦合到较大尺度上的内部流和场的动态磁流体动力学（MHD）模型，以及经过良好测试和实验校准的较小尺度的湍流MHD闭合模型。这项新工作是Garaud博士正在进行的恒星内部MHD结构研究的自然延伸。Garaud博士和她的合作者还将推出一年一度的天体物理流体动力学国际暑期学校和研讨会（AFD）。该系列讲座将松散模仿世界著名的地球物理流体动力学暑期学校主办的伍兹霍尔海洋研究所。讲座将集中在教授学生的理论（数学和计算）工具，在AFD的某些类的问题。相关的科学研讨会将在每个系列讲座结束时组织，这次邀请理论家和观察员，从而完成了在研究主题中具有最先进的双重视角的计划。 地点将在不同的合作伙伴国家之间交替，以加强该计划的国际层面并分担组织成本。讲座将在网上公布。

Recent observations of our own Sun as well as other stars suggest the need for new approach to modeling stellar evolution, which fully takes into account the inevitably magnetized nature of stars. Dr. Pascale Garaud (University of California - Santa Cruz) will work on the construction of a multidimensional stellar evolution model which takes into account magnetic fields, rotation and all other associated dynamical effects. As a part of this project a new numerical model developed which couples the exact solutions of the nuclear evolution equations to a dynamical magnetohydrodynamic (MHD) model for the internal flows and fields on the larger scales, and a well-tested and experimentally calibrated turbulent MHD closure model for the smaller scales. This new work is a natural extension of Dr. Garaud's ongoing research on the MHD structure of stellar interiors.Dr. Garaud and her collaborators will also launch a yearly international Summer School and Workshop in Astrophysical Fluid Dynamics (AFD). The lecture series will be loosely modeled on the world-renowned Geophysical Fluid Dynamics Summer School hosted by the Woods Hole Oceanographic Institution. The lectures will be focused on teaching students the theoretical (mathematical and computational) tools for certain classes of problems in AFD. A related scientific workshop will be organized at the end of each lecture series inviting this time both theorists and observers, thus completing the program with a state-of-the art dual perspective in the topic studied. The venue will alternate between different partner countries to enhance the international dimension of the program and share organizational costs. The lectures will be published on the web.