Strengthening Foundations for Magnetocentrifugal Outflows: Jet Rotation and Disk-Wind Connection in Star Formation

加强磁离心流出的基础：恒星形成中的射流旋转和盘风连接

• 批准号: 1313083
• 负责人: Zhi-Yun Li
• 金额: $ 26.87万
• 依托单位: University of Virginia Main Campus
• 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: 2013-09-15 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1313083&HistoricalAwards=false
• 关键词: Strengthening; Foundations; Magnetocentrifugal; Outflows; Jet

The goal of this proposal is to investigate the magnetocentrifugal mechanism for producing jets and outflows in the star formation process. The proposal will attack this problem, first, by strengthening the observational foundation of the magnetocentfiugal outflow theory by quantifying the Doppler gradient expected in realistic outflows from young stellar objects (YSOs) using 3-D magnetohydronamic (MHD) simulations. The second part of the proposal aims to strengthen the theoretical foundation of these YSO outflows by treating non-ideal MHD effects by using newly-developed Zeus-based MHD code. This project will advance our understanding of the jets and outflows associated with young stellar objects through state-of-the-art numerical simulations and will make valuable predictions regarding jet rotation that will be testable by the Atacama Large Millimeter Array (ALMA). The project outlines 5 areas in which it will make a broader impact including: animated movies of jet formation, training a PhD student, public outreach through the University of Virginia?s observatories, developing a mobile planetarium for use in science education in rural Virginia counties, and release of the non-ideal MHD code that is developed.

这个提议的目标是研究在星星形成过程中产生喷流和外流的磁离心机制。 该提案将攻击这个问题，首先，通过量化多普勒梯度预计在现实的年轻恒星物体（YSO）流出使用3-D magnetohydronamic（MHD）模拟，加强观测基础的magnetocentfugal外流理论。 建议的第二部分旨在加强这些YSO外流的理论基础，通过使用新开发的基于Zeus的MHD代码处理非理想MHD效应。该项目将通过最先进的数值模拟推进我们对与年轻恒星物体相关的喷流和外流的理解，并将对阿塔卡马大型毫米波阵列（阿尔马）可测试的喷流旋转做出有价值的预测。 该项目概述了5个领域，它将作出更广泛的影响，包括：动画电影的喷气机形成，培训博士生，公众宣传通过弗吉尼亚大学？的天文台，开发一个移动的天文馆用于在弗吉尼亚州农村县的科学教育，并发布非理想的磁流体动力学代码的开发。