Are the Lyman alpha forest "clouds" expanding pancakes?
Abstract
Description
The large sizes of Lyman alpha ``clouds'' inferred from coincident absorption in the spectrum of close quasar pairs suggests that these are transient flattened structures of small overdensity. It is argued that the observed absorbers should be preferentially located in underdense regions of the universe and should typically expand faster than the Hubble flow.
6 pages, uuencoded postscript file, 2 figures included, to appear in the proceedings of the conference on "Cold Gas at High Redshift", August 28-30th, 1995, Hoogeveen, Holland, eds. Bremer et al
6 pages, uuencoded postscript file, 2 figures included, to appear in the proceedings of the conference on "Cold Gas at High Redshift", August 28-30th, 1995, Hoogeveen, Holland, eds. Bremer et al