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Fig. 23.

Fig. 23. Refer to the following caption and surrounding text.

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X-ray luminosity as a function of redshift, following the color scheme introduced in Fig. 3. BlazEr1 sources are shown in gray. The colored symbols are sources with low DET_LIKE, quality issues or a high angular separation. The added lines are the same as in Fig. 9. The upper limits have been taken from the BLAZE catalog.

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