The Role of Magnetic fields in the formation of Massive stars

磁场在大质量恒星形成中的作用

• 批准号: 2904444
• 金额: --
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2904444
• 关键词: Role; Magnetic; fields; formation; Massive

Magnetic fields are ubiquitous in the interstellar medium but their detailed role in the formation of stars is as yet unclear. In the dense star forming regions of molecular clouds the magnetic field can be traced through observations of the polarized continuum emission from dust grains which align with the magnetic field. However, to understand how magnetic fields affect the evolution of the gas, observations of the magnetic field must be combined with observations of the cold, molecular gas in the regions. This project will study the impact of the magnetic fields as gas flows from parcsec-scale clumps down to individual star forming cores and protostars. It will involve observations of polarization emission from dust and molecular lines to study the magnetic field and molecular gas covering a wide range of size scales in star forming regions. Part of the project will be developing new methods to compare the polarization and line observations with the results of state-of-the-art magneto-hydrodynamics simulations.

磁场在星际介质中无处不在，但它们在恒星形成中的详细作用尚不清楚。在分子云的致密恒星形成区域中，可以通过观察与磁场对齐的尘埃颗粒的偏振连续发射来追踪磁场。然而，为了了解磁场如何影响气体的演化，必须将磁场的观测与该区域的冷分子气体的观测结合起来。该项目将研究当气体从秒差距尺度的团块流向单个恒星形成核心和原恒星时磁场的影响。它将涉及对尘埃和分子线的偏振发射的观测，以研究恒星形成区域中覆盖各种尺寸尺度的磁场和分子气体。该项目的一部分将开发新方法，将偏振和线观测与最先进的磁流体动力学模拟结果进行比较。