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QSO Absorption Lines and Cosmology

Sargent, Wallace L. W. (1987) QSO Absorption Lines and Cosmology. In: Observational Cosmology. International Astronomical Union Symposium (IAUS). No.124. Springer Netherlands , Dordrecht, pp. 777-792. ISBN 9789027724762.

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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.

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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 I also thank D. Tytler for providing me with details of his unpublished work.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.
Funding AgencyGrant Number
NSFAST 84-16704
Subject Keywords:Absorption Line; Heavy Element; Column Density; Intergalactic Medium; Gravitational Lens
Series Name:International Astronomical Union Symposium (IAUS)
Issue or Number:124
Record Number:CaltechAUTHORS:20200930-113055578
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:105687
Deposited By: George Porter
Deposited On:30 Sep 2020 19:26
Last Modified:16 Nov 2021 18:45

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