jianjie

中国天文学会学术期刊

天文学进展

PROGRESS IN ASTRONOMY

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赖曼a森林的研究进展(II)：模型

黄克谅周洪楠
(南京师范大学物理系　南京　210097)

摘要

简要介绍了赖曼a森林的各种模型。宇宙流体力学模拟成功地再现了赖曼a森林的大部分观测结果，并使人们认识到：产生赖曼a森林的吸收体实际上是星系际介质中延伸的过密区，这种密度起伏是宇宙结构形成过程的自然结果。赖曼a森林已成为宇宙学研究的有力工具。

Progress in Study on Lyman a Forest (II) : Models

Huang Keliang Zhou Hongnan
(Department of Physics, Nanjin Normal University, Nanjin 210097)

Abstract

The models of Lyman a forest are briefly reviewed in this paper. Cosmological hydrodynamic simulations reveal successfully most observations of Lyman a forest and make people recognize that Lyman a absorbers are extended overdensity regions of intergalactic medium. This density fluctuation is a natural result of cosmic structure formation. Now Lyman a forest becomes a useful tool to study cosmology.