The role of radiation and cosmic rays in galaxy formation

辐射和宇宙射线在星系形成中的作用

• 批准号: DP190101258
• 负责人: Prof Mark Krumholz
• 金额: $ 30.18万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2019
• 资助国家: 澳大利亚
• 起止时间: 2019-07-01 至 2022-06-30
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP190101258
• 关键词: role; radiation; cosmic; rays; galaxy

This project aims to solve the enduring question about galaxy formation of why galaxies are so inefficient at turning gas into stars. This project will investigate two possible agents for this inefficiency, the pressures exerted by starlight photons and the relativistic cosmic rays produced by supernovae, using a combination of numerical simulations, basic physical analysis, and comparison to observations. The expected outcome will be a greatly improved understanding of the physics of the interaction of radiation and cosmic rays with star-forming interstellar gas. This will help complete the picture of how galaxies like our own came to be, and will provide tools for both future simulations and the interpretation of observations.

该项目旨在解决关于星系形成的长期问题，即为什么星系在将气体转化为恒星方面如此低效。该项目将调查这种低效率的两种可能的代理商，星光光子施加的压力和超新星产生的相对论宇宙射线，使用数值模拟，基本物理分析和与观测结果的比较相结合。预期的结果将是大大提高对辐射和宇宙射线与形成恒星的星际气体相互作用的物理学的理解。这将有助于完成像我们这样的星系是如何形成的图片，并将为未来的模拟和解释观测提供工具。