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from a numerical
Detection from an astronomical survey
The CfA redshift catalogue contains the coordinates of 18,000 galaxies
covering a part of the Universe. From this catalogue a thin slice of
the universe of about 1000 galaxies was extracted, with a right
ascension between 8 and 17 hours, a declination between 26.5 and 32.5
degrees and a recession velocity lower than 15000 km.s. The spatial
distribution of this subset of galaxies is plotted in Figure 6. The result of the extraction with the
``Quality Candy'' model shows a very interesting filament network. One
can recognize the famous ``Great Wall'' filament crossing the whole
catalogue as well as the circular filaments surrounding void regions.
Figure 6:
Extracted filament network from a galaxy map of the CfA catalogue.
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Xavier Descombes
2005-10-24