标题： 大尺度结构的重建 显示英文标题

标题： Reconstruction of the Large Scale Structure

摘要： 宇宙的大尺度结构是通过维纳滤波器和高斯场的约束实现重建的。 从光学选择的星系（Hudson \cite{Hudson}）构建的密度场已被采样到距离$80\hmpc$的范围。 该数据集用于重建潜在的原始扰动场。 为了进行比较，这里展示了基于IRAS $1.9Jy$ 密度场的初步重建分析。 假设标准CDM模型，在以本地星系群为中心、边长为$160\hmpc$的立方体内，且具有长度为$10\hmpc$的高斯平滑，重建了扰动场。 特别是研究了避让区内的密度场。 对Hudson的数据进行的初步最大似然分析显示，它与倾斜的CDM一致，其中$n\sim -0.5\pm 0.3$ 和$\sigma_8\sim 1.4\pm 0.15$ 显示英文摘要

摘要： The large scale structure of the universe is reconstructed by means of the Wiener filter and constrained realizations of Gaussian fields. The density field constructed from optically selected galaxies (Hudson \cite{Hudson}) has been sampled out to a distance of $80\hmpc$. This data set is used for the reconstruction of the underlying primordial perturbation field. A preliminary reconstruction analysis from the IRAS $1.9Jy$ density field is presented here for the sake of comparison. The perturbation field within a cube of $160\hmpc$ on the side, centered on the Local Group, and with Gaussian smoothing of length $10\hmpc$ is reconstructed, assuming the standard CDM model. In particular, the density field at the Zone of Avoidance is studied. A preliminary maximum likelihood analysis performed on Hudson's data shows that it is consistent with a tilted CDM with $n\sim -0.5\pm 0.3$ and $\sigma_8\sim 1.4\pm 0.15$