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Detection from a numerical simulation
We first tested our method on the numerical simulation kindly provided
by the authors of [4]. As shown
in figures 3, 4
and 5, both ``Candy'' and ``Quality
Candy'' algorithms enable large improvement with respect to the MST
method which basically simply connects all points of the map. The
network extracted by the ``Quality Candy'' model, though partially
incomplete, presents an overall structure in adequation with the
description of the cosmic filaments made in section 1, that is to say, a network of
filaments of varying sizes surrounding huge voids. The network
extracted by the ``Candy'' model highlights more filaments, but some of
them seem to be overdetected.
Figure 3:
Network extracted by the ``Quality Candy'' model (CPU time: 20mn).
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Figure 4:
Network extracted by the ``Candy'' model [4].
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Figure 5:
Network extracted by the MST model [4].
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Next: Detection from an
astronomical
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Xavier Descombes
2005-10-24