Fig. 3.

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Left: Fe Kα emitting radius (RFe Kα) versus dust sublimation radius (Rsub) in units of parsecs. Rsub values are estimated using Eq. (3) and RFe Kα values are estimated using Eq. (2). The gray shaded area represents RFe Kα ≥ Rsub. Right: Fe Kα emitting radius (RFe Kα) versus optical BLR radius (RHβ) in units of parsecs. RHβ is directly calculated from Hβ reverberation lags. The gray shaded area represents RFe Kα ≥ RHβ.
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