Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the importance of high redshift intergalactic voids   We investigate the properties of one--dimensional flux ``voids'' (connected
regions in the flux distribution above the mean flux level) by comparing
hydrodynamical simulations of large cosmological volumes with a set of observed
high--resolution spectra at z ~ 2. After addressing the effects of box size and
resolution, we study how the void distribution changes when the most
significant cosmological and astrophysical parameters are varied. We find that
the void distribution in the flux is in excellent agreement with predictions of
the standard LCDM cosmology, which also fits other flux statistics remarkably
well. We then model the relation between flux voids and the corresponding
one--dimensional gas density field along the line--of--sight and make a
preliminary attempt to connect the one--dimensional properties of the gas
density field to the three--dimensional dark matter distribution at the same
redshift. This provides a framework that allows statistical interpretations of
the void population at high redshift using observed quasar spectra, and
eventually it will enable linking the void properties of the high--redshift
universe with those at lower redshifts, which are better known.

21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas