Unified Analysis of Structure Formations and Evolutions in the Deep Universe

1.我们发展了一个半解析模型来解决星系形成的问题，并利用这个基于层次聚类的半解析模型得到了一些有趣的结果。通过这个模型，我们试图澄清什么物理过程，从来没有考虑到在星系形成模型，影响星系的形成和演化。此外，我们还试图对宇宙学模型和与星系形成有关的一些物理过程，如星星的形成等进行约束。关于星系形成的详细主题如下所示。(1)阐明了原天体的合并历史对现今暗物质晕角动量分布的影响。(2)利用包含光电离过程的半解析模型研究了紫外背景辐射对星系形成的影响，阐明了紫外背景辐射对星系形成的影响。(3)我们计算了椭圆管中冷气体的探测率 ...更多信息 星系形成的半解析模型，并将其与观测进行比较。然后我们就可以限制星系形成中星星的形成率。(4)利用半解析模型阐明了星系团中椭圆星系在等级成团情况下色-星等关系的物理起源。(5)利用基于层次聚类方案的半解析模型对星系数计数进行了分析。在这个模型中，我们引入了在高红移时由于表面亮度迅速变暗而产生的选择效应，以及星系际HI云和内部尘埃的吸收，这在以前的星系计数分析中是没有考虑的.本文研究了一维引力片的弛豫、李雅普诺夫不稳定性的时间尺度和Kolmogorov-Sinai时间之间的关系。我们发现，弛豫时间的最终热平衡不同的反的李雅普诺夫指数和Kolmogorov-Sinai时间.在强非线性区域，我们发现了两点空间相关函数与暗物质晕密度分布之间的关系。少

1. We developed a semi-analytic model for resolving the problems of galaxy formations and got some interesting results using this semi-analytic model based on the hierarchical clustering. By using this model, we tried to clarify what physical processes, which have never been taken into account in the galaxy formation models, influence on galaxy formations and evolutions. Furthermore, we tried to constrain the cosmological models and some physical processes concerned in the galaxy formations, such as star formations. The detailed topics on the galaxy formations are shown below.(1) The effects of merging histories of proto-objects on the angular momentum distributions of the present-time dark matter haloes were clarified.(2) We investigated the effects of the UV background radiation on galaxy formations by using the semi-analytic model including the photoionization process and we clarified its effects on the galaxy formations.(3) We calculated the detection rate of cold gas in elliptical … More galaxies using the semi-analytic model of galaxy formation, and compared it with observations. Then we could constrain the star formation rates in the galaxy formations.(4) We clarified the physical origin of the color-magnitude relation of elliptical galaxies in clusters of galaxies in the hierarchical clustering scenario by using the semi-analytic model.(5) The galaxy number counts are analyzed by using the semi-analytic model based on the hierarchical clustering scenario. In this model, we introduced the selection effects due to the rapidly dimming surface brightness at high redshift and the absorption by intergalactic HI clouds and by internal dust, which are not considered in the previous analysis of galaxy counts.2. The relation between relaxation, the time scale of Lyapunov instabilities, and the Kolmogorov-Sinai time in a one-dimensional gravitating sheet is studied. We found that the relaxation time to the final thermal equilibrium differs from the inverse of the Lyapunov exponents and the Kolmogorov-Sinai time.3. We found the relation between the two-point spatial correlation function and the density profile of the dark matter halos in the strongly nonlinear regime. Less