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The evolution of intergalactic Hydrogen clouds: confusion resolved

Published online by Cambridge University Press:  19 July 2016

H.S. Murdoch ,
R.W. Hunstead ,
M. Pettini  and
J.C. Blades
H.S. Murdoch
Affiliation:
School of Physics, University of Sydney, Australia
R.W. Hunstead
Affiliation:
School of Physics, University of Sydney, Australia
M. Pettini
Affiliation:
Royal Greenwich Observatory, Hailsham, U.K.
J.C. Blades
Affiliation:
Space Telescope Science Institute, Baltimore, U.S.A.

Extract

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It is now widely accepted that a population of intergalactic hydrogen clouds is responsible for the plethora of absorption lines seen at wavelengths shorter than Ly α emission in all high-z QSOs. The question of whether the comoving number density of such clouds evolves with redshift has been somewhat controversial. It is usually assumed that

Type
VI. Quasars as Probes of the Intervening Medium
Information
Symposium - International Astronomical Union , Volume 119: Quasars , 1986 , pp. 563 - 567
Copyright
Copyright © Reidel 1986 

References

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