Abstract

We propose a method of analyzing the absorption spectra of quasars that allows the physical parameters of absorbing clouds, absorbers, to be roughly estimated: their masses, sizes, and mean densities. An analysis of three representative catalogs of the Lyman-alpha (\(Ly_{\alpha}\)) forest and metal absorption line systems confirms that these observations refer to two types of objects with different properties, each of which forms a one-parameter sequence. The parameters of the metal absorption line systems are consistent with the corresponding estimates of the parameters of galaxies. The parameters of the \(Ly_{\alpha}\) forest differ significantly from the galactic ones, but are close to the parameters of a large number of halos presented in numerical models. Possible reasons for the emergence of two one-parameter systems of halos with different properties are discussed.

中文翻译：

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莱曼-阿尔法森林作为大规模结构元素的指示

摘要

我们提出了一种分析类星体吸收光谱的方法，该方法可以粗略估算吸收云，吸收体的物理参数：其质量，大小和平均密度。对Lyman-alpha（\（Ly _ {\ alpha} \））森林和金属吸收线系统的三个代表性目录的分析证实，这些观察结果涉及具有不同属性的两种类型的对象，每种对象形成一个参数。顺序。金属吸收线系统的参数与星系参数的相应估计一致。所述的参数\（Ly的_ {\阿尔法} \）森林与银河系有显着差异，但与数值模型中呈现的大量光环的参数相近。讨论了出现两个性质不同的光环的一参数系统的可能原因。