Simulations of the formation, evolution and clustering of galaxies and quasars
Simulations of the formation, evolution and clustering of galaxies and quasars
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DOI：
10.1038/nature03597
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发表时间：
2005-06-02
期刊：
影响因子：
64.8
通讯作者：
Pearce, F
中科院分区：
文献类型：
--
作者：
Springel, V;White, SDM;Pearce, F
冷暗物质模型已经成为宇宙结构形成的主要理论图景。该模型与宇宙暴胀理论一起，对结构形成的初始条件做出了明确的预测，并预测了结构通过引力不稳定性分层生长。测试这个模型需要星系巡天提供的精确测量值可以与强大且同样精确的理论计算进行比较。在这里，我们提出了一个使用2,160 3粒子的暗物质结构的生长模拟，跟随他们从红移z = 127到现在在一个立方体形状的区域2,230亿光年的一面。在后处理中，我们还跟踪了星系和类星体的形成和演化。我们表明，重子诱导的功能在宇宙的初始条件下反映在扭曲的形式在低红移星系分布，这种效果可以用来约束暗能量的性质与未来几代的观测调查的星系。
The cold dark matter model has become the leading theoretical picture for the formation of structure in the Universe. This model, together with the theory of cosmic inflation, makes a clear prediction for the initial conditions for structure formation and predicts that structures grow hierarchically through gravitational instability. Testing this model requires that the precise measurements delivered by galaxy surveys can be compared to robust and equally precise theoretical calculations. Here we present a simulation of the growth of dark matter structure using 2,160 3 particles, following them from redshift z = 127 to the present in a cube-shaped region 2,230 billion lightyears on a side. In postprocessing, we also follow the formation and evolution of the galaxies and quasars. We show that baryon-induced features in the initial conditions of the Universe are reflected in distorted form in the low-redshift galaxy distribution, an effect that can be used to constrain the nature of dark energy with future generations of observational surveys of galaxies.