Building Models of the Universe with Hydrodynamic Simulations

通过流体动力学模拟构建宇宙模型

• 批准号: 2317773
• 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: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2317773
• 关键词: Building; Models; Universe; Hydrodynamic; Simulations

Hydrodynamic simulations have become the cosmologist's tool of choice for modelling the assembly of large-scale structure in the Universe, from galaxies to clusters to the cosmic web. The processes involved are highly non-linear, involving complex interactions between the baryonic and dark matter components. While such interactions are driven by gravity, astrophysical processes such as the formation of stars and super-massive black holes, and the feedback of energy from these sources to the surrounding gas (via powerful galactic outflows) also need to be incorporated to make realistic models of the observed galaxy and cluster population. As part of the Virgo consortium, an international collaboration of computational cosmologists, we are currently developing the next generation of these simulations that exploit recent advances in computing power and simulation codes. In this project, the student will have the opportunity to participate in the development of these new simulations and exploit the resulting data to make new predictions for the properties of galaxy clusters, in particular how the feedback affects the properties of their galaxies and hot gas.

流体动力学模拟已成为宇宙学家的首选工具，用于模拟宇宙中大尺度结构的组装，从星系到星系团再到宇宙网。所涉及的过程是高度非线性的，涉及重子和暗物质成分之间复杂的相互作用。虽然这种相互作用是由引力驱动的，但天体物理过程，如恒星和超大质量黑洞的形成，以及从这些来源到周围气体的能量反馈（通过强大的银河系外流），也需要结合起来，以使观察到的星系和星系团人口的现实模型。作为Virgo联盟的一部分，计算宇宙学家的国际合作，我们目前正在开发下一代这些模拟，利用最新的计算能力和模拟代码的进步。在这个项目中，学生将有机会参与这些新模拟的开发，并利用由此产生的数据对星系团的性质进行新的预测，特别是反馈如何影响星系和热气体的性质。