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Lyα absorption systems and the intergalactic medium

被引：19
作者：
Efstathiou, G
Schaye, J
Theuns, T
机构：
[1] Inst Astron, Cambridge CB3 0HA, England
[2] Max Planck Inst Astrophys, D-85740 Garching, Germany
来源：
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES | 2000年 / 358卷 / 1772期
关键词：
intergalactic medium; galaxy formation; dark matter;
D O I：
10.1098/rsta.2000.0629
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The last few years have seen a dramatic improvement in our understanding of the origin of Ly alpha absorption systems. Hydrodynamic numerical simulations of cold-dark-matter-dominated universes have shown that the many properties of the Ly alpha absorption systems can be explained by a photoionized, space-filling, intergalactic medium. Ly alpha lines offer promising probes of the photoionizing background, the amplitude of the mass fluctuations at high redshift and the evolution of the equation of state of the intergalactic medium.
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页码：2049 / 2062
页数：14
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