Fig. 9.

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Set of 1000 power spectra randomly chosen from the 105 simulated spectra for Ar = 0 scenario. Panels from top to bottom refer to z = 8.3, 9.1, and 10.1, respectively. The dashed lines correspond to the power spectrum for a completely neutral IGM with no X-ray heating and with TS = TK at those redshifts. The down arrow points refer to the different 2σ upper limits at those redshifts.
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