Figure 11:
Distribution of the gas density at
redshift
from a numerical
hydrodynamics
simulation of the Ly
forest with a CDM spectrum
normalized to second year COBE observations,
Hubble parameter of
, a comoving box size of
, and baryonic density of
composed of 76% hydrogen and 24%
helium. The region shown is 2.4
Mpc (proper) on a
side. The isosurfaces represent
baryons at ten times the mean density and are color coded
to the gas
temperature (dark blue
, light blue
). The higher density contours
trace
out isolated spherical structures
typically found at the intersections of the filaments. A
single random
slice through the cube is also
shown, with the baryonic overdensity represented by a
rainbow-like color
map changing from black (minimum)
to red (maximum). The
mass fraction is shown with
a
wire mesh in this same slice. To
emphasize fine structure in the minivoids, the mass
fraction in the
overdense regions has been rescaled
by the gas overdensity wherever it exceeds unity.
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