赖曼α森林的研究进展(Ⅱ):模型  

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

作　　者：黄克谅[1] 周洪楠[1] 

机构地区：[1]南京师范大学物理系,南京210097

出　　处：《天文学进展》2003年第2期163-173,共11页Progress In Astronomy

基　　金：国家自然科学基金(10273007)

摘　　要：简要介绍了赖曼α森林的各种模型。宇宙流体力学模拟成功地再现了赖曼α森林的大部分观测结果,并使人们认识到:产生赖曼α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α森林已成为宇宙学研究的有力工具。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.

关 键 词：赖曼α森林 宇宙流体力学模拟 类星体吸收线 模型 宇宙学 密度起伏 

分 类 号：P158[天文地球—天文学]