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.

该提案的目标是研究恒星形成过程中产生喷流和流出的磁力离心机制。 该提案将首先通过使用 3D 磁流体 (MHD) 模拟量化年轻恒星物体 (YSO) 实际流出中预期的多普勒梯度，加强磁离心流出理论的观测基础，从而解决这个问题。 该提案的第二部分旨在通过使用新开发的基于 Zeus 的 MHD 代码处理非理想 MHD 效应来加强这些 YSO 流出的理论基础。该项目将通过最先进的数值模拟加深我们对与年轻恒星相关的喷流和流出的理解，并将对喷流旋转做出有价值的预测，这些预测将可由阿塔卡马大型毫米波阵列（ALMA）进行测试。 该项目概述了它将产生更广泛影响的 5 个领域，包括：喷气形成的动画电影、培训博士生、通过弗吉尼亚大学天文台进行公众宣传、开发用于弗吉尼亚乡村县科学教育的移动天文馆，以及发布所开发的非理想 MHD 代码。