AAS 197, January 2001
Session 66. When the Universe was Mostly Gas
Oral, Tuesday, January 9, 2001, 1:30-3:00pm, Royal Palm 3/4

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[66.02] Correlation of Lyman-alpha Forest Absorption in Multiple Lines of Sight

P. McDonald (OSU & UPenn)

Measurements of the correlation of the absorption in nearby lines of sight can provide an important test of the Ly\alpha forest model, and can be used to measure the cosmological constant by the Alcock & Paczynski test. I describe predictions for the correlation in three-dimensions, obtained from numerical simulations of the Ly\alpha forest. I also discuss how these predictions can be used to measure cosmological parameters from groups of spectra, and the accuracy we can expect from these measurements. Finally, I give results for the correlation measured from some already observed sets of spectra.

The author(s) of this abstract have provided an email address for comments about the abstract: mcdonald@astronomy.ohio-state.edu

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