Modelling the formation of cosmic structure

模拟宇宙结构的形成

• 批准号: 127335-2008
• 负责人: Couchman, Hugh
• 金额: $ 4.15万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=391359
• 关键词: Modelling; formation; cosmic; structure

Understanding the formation of cosmic structure, from the first stars at early epochs to the rich array of galaxies and galaxy clusters in the nearby universe, drives many aspects of contemporary astronomy. Recent observations of the relic microwave radiation from early in the universe tightly constrain the form of the tiny initial density fluctuations out of which these structures grew. My research focusses on the critical numerical models of cosmic evolution that connect these initial cosmic ripples with presently observed cosmic populations. Despite simple governing physics, the huge range of scales present and complex gravitational and hydrodynamic interactions means that detailed predictions require the indispensable experimental laboratory provided by numerical simulation.

从早期的第一批恒星到附近宇宙中的一系列星系和星系簇，了解宇宙结构的形成，驱动了当代天文学的许多方面。从宇宙初期开始对遗物微波辐射的最新观察，紧密地限制了这些结构生长的微小初始密度波动的形式。我的研究集中在宇宙进化的关键数值模型上，该模型将这些初始宇宙波纹与目前观察到的宇宙种群联系起来。尽管简单地管理物理学，但范围很大的量表以及复杂的引力和流体动力相互作用意味着详细的预测需要数值模拟提供的必不可少的实验实验室。