Cosmological simulations of galaxy formation
Cosmological simulations of galaxy formation
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DOI：
10.1038/s42254-019-0127-2
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发表时间：
2019-09
影响因子：
38.5
通讯作者：
M. Vogelsberger;F. Marinacci;P. Torrey;E. Puchwein
中科院分区：
文献类型：
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作者：
M. Vogelsberger;F. Marinacci;P. Torrey;E. Puchwein
近几十年来，星系形成的宇宙学模拟有助于增进我们对宇宙结构和星系形成的理解。这些模拟遵循星系的非线性演化，对大范围时间和长度尺度上的各种物理过程进行建模。对相关物理过程的更好理解、数值方法的改进和计算能力的提高使得模拟可以重现大量观测到的星系特性。现代模拟从明确的初始条件开始，对膨胀时空中的暗物质、暗能量和普通物质进行建模。普通物质的建模最具挑战性，因为大量物理过程会影响该组件。事实证明，宇宙学模拟对于研究替代宇宙学模型及其对星系群体的影响也很有用。本技术评论简要概述了星系形成的宇宙学模拟方法及其不同应用。
Over recent decades, cosmological simulations of galaxy formation have been instrumental in advancing our understanding of structure and galaxy formation in the Universe. These simulations follow the nonlinear evolution of galaxies, modelling a variety of physical processes over an enormous range of time and length scales. A better understanding of the relevant physical processes, improved numerical methods and increased computing power have led to simulations that can reproduce a large number of the observed galaxy properties. Modern simulations model dark matter, dark energy and ordinary matter in an expanding space-time starting from well-defined initial conditions. The modelling of ordinary matter is most challenging due to the large array of physical processes affecting this component. Cosmological simulations have also proven useful to study alternative cosmological models and their impact on the galaxy population. This Technical Review presents a concise overview of the methodology of cosmological simulations of galaxy formation and their different applications.