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Fig. 7

image

Confidence levels for the BAO detection as a function of the quality of the optical follow-up, specified by σ0 and ffail, for limiting soft-band X-ray fluxes Flim = 10-14 (lefthand panels) and 10-15 erg s-1/cm2 (righthand panels). For Flim = 10-14 (10-15) cases with a complete and 10% (10% and 1%) sky coverage are shown. A redshift range z = 0.5 − 2.5 is assumed.

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