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Computing the X-Ray Universe Movie: text
Simulation in a 2-D, co-moving frame
To more clearly see the structure formation process, let's repeat the last
sequence and view it in a frame which is comoving with the expanding
universe.
Here one sees how small fluctuations grow and cluster into larger coherent
structures. This behavior is caused by gravity, which has overcome the cosmic
expansion and pulled slightly overdense regions into dense filaments,
seen here
in green. The
intersection of filaments, seen in red, locate where rich clusters of
galaxies
form, as well as their hot X-ray halos.
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Copyright, (c) 1995: Board of Trustees, University of
Illinois
NCSA. Last modified, 10/12/95