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Fig. 1.

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Calculated effective radius ratio, ℛ, taking α = 0.1, Rin = 3RS and Rout = 5000RS. In panel (a), we show ℛ with a given value of M• but varying accretion rates. In panels (b) and (c), we fix and alter M•. Although the values of ℛ show complicated behaviors, the observed radii is 1.2–2.6 times of the blackbody ones overall.
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