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Published 1987 | public
Book Section - Chapter

QSO Absorption Lines and Cosmology

Abstract

The properties of the different types of QSO absorption systems are briefly summarized. An overview is given of the potential applications of absorption lines in cosmology. Recent work on the cosmological evolution of the different types of absorbers is discussed. The physical properties of the intergalactic medium are discussed in the light of recent work on the "Lyman alpha clouds". The uses of the lines for studies of the evolution of clustering in the Universe are described. Recent puzzling results on common absorption in pairs of QSOs, particularly Q1037-2704 and Q1038-2712, are summarized.

Additional Information

© IAU 1987. I thank my co-workers A. Boksenberg, D. Kunth and C. Steidel for allowing me to quote the results of our joint work in advance of publication. I also thank D. Tytler for providing me with details of his unpublished work. The work described in this paper was supported in part by the National Science Foundation under Grant AST84-16704.

Additional details

Created:
August 22, 2023
Modified:
January 15, 2024