Fig. C.1.
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A subset of 1000 power spectra simulated with GRIZZLY at z = 9.1. These power spectra correspond to those with Ar = 0. The red and magenta points refer to the recent LOFAR 1σ upper limits from Mertens et al. (2025) and Acharya et al. (2024c), respectively. As a reference, the red dashed line corresponds to the power spectrum for a completely neutral IGM with no X-ray heating and TS = TK.
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