Fig. A.1

Filaments in the MareNostrum simulation of the formation of galaxies. The upper panels display the original image (a), extracted filaments on all spatial scales (b), and filament-subtracted image (c). The lower panels show the filaments partially reconstructed up to 20′′ scale (d), 3-color (red, green, blue) composite image of the filaments partially reconstructed up to 2000′′, 160′′, and 10′′ scales (e), as well as the segmentation image of skeletons that appear on more than 5 spatial scales (f). Pixel values in panel (f) represent the skeleton number.
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