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Fig. 1


Optical–X-ray spectral index αox as a function of the Eddington ratio for M = 108M, α = 0.3, β = 0.95, “+” values for mass supply rates = 0.015, 0.02, 0.03, 0.05, 0.1. The inset shows spectra, log[(νLν(erg s-1)] plotted against log[ν(Hz) ] for the same rates from the bottom up.

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