Fig. 15.

image

Two examples of GALICS simulations of diffuse Lyα emission in overdensities. Top row: ID 2563 δ = 2.8, z = 3.10. Bottom row: ID 12195 δ = 6.5, z = 4.96. First column: distribution of simulated galaxies within the MOSAIC and MXDF field of view. Bright Lyα emitters with FLyα > 10−18 are marked with red symbols and those with 10−19 < FLyα < 10−18 with orange symbols. In the MOSAIC, the limit for bright Lyα emitters is set to 10−17.5. Flux units are erg s−1 cm−2. Low-luminosity sources extrapolated from the LF (see text) are shown in blue. Second column: corresponding noiseless Lyα narrowband image. Third column: simulated MXDF narrowband image with noise. Fourth column: composite of low and mid frequencies IUWT wavelets S/N components. The contours of the identified filament and compact source area are shown respectively in white and red. The MXDF field of view has an 82 arcsec diameter or 2.6 cMpc at z = 3.

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