... passes
We do not consider here two additional pointings performed separately in AO-6.
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...-1
We verified that adopting a luminosity cut at L0.5-10>1041.5 erg s-1produces similar results as adopting a redshift cut at z=0.2.
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... Mpc
Since varies only by in the range of the measured slopes, Band C show almost exactly the same behaviour with .
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... field
Another 25 X-ray selected objects belonging to this structure are found using photometric redshifts (see Fig. 3 and Salvato et al. 2009).
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... disappears
We note that, because of this excess due to the structure, a simple power law is a very poor fit to the of our full reference sample and of the z<1 AGN subsample (see Sect. 5.3 and Table 1). In contrast, a simple power law provides statistically acceptable fits for all the other subsamples analyzed in this work.
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... bands
Upper (lower) limits to the hardness ratio for objects that are not detected in the soft (hard) band have been computed assigning 40 counts in the non-detection band to each source. The distribution of the counts of the detected sources indeed shows a turnover at this value, which therefore appears as the average count threshold for source detection.
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... simulation
See http://www.mpa-garching.mpg.de/millennium.
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...2007)
Only small differences arise if we assume as in the Millennium simulation. The other relevant cosmological parameters assumed in this work are the same as in the Millennium simulation.
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... effects
an X-ray photon index of is assumed.
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