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: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=513722
• 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.

了解宇宙结构的形成，从早期的第一颗恒星到附近宇宙中丰富的星系和星系团阵列，推动了当代天文学的许多方面。最近对宇宙早期微波辐射遗迹的观测，严格地限制了这些结构生长的微小初始密度波动的形式。我的研究重点是宇宙演化的关键数值模型，将这些初始宇宙涟漪与目前观察到的宇宙人口联系起来。尽管简单的管理物理，目前的规模和复杂的引力和流体动力学相互作用的巨大范围意味着详细的预测需要数值模拟提供的不可或缺的实验室。