The multi-blackbody "Self-IrRadiated Funnel" model is designed to model optically-thick outflow-dominated accretion. The basic idea is simple: you just assume a lot of matter, angular momentum and energy emerges in a limited volume. Momentum conservation leads to non-sphericity of the flow that has subsequently conical (funnel-like) shape. The model calculates temperature distribution at the funnel walls (taking into account irradiation by iterative process) and the outer photosphere. We also assume that inside the cone there is a deep pseudo-photosphere. Relativistic boosts are taken into account for high velocities. For a comprehensive description of the physical model, see: Abolmasov, P., Karpov, S. and Kotani, T. PASJ, 61, 2, 213.
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par1 |
tin, inner temperature (at the inner, inside-the-funnel photosphere). |
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par2 |
rin, inner (inside-the-funnel photosphere) radius in "spherisation radius" units (the latter is defined as 3 Κ Mdot / Ωf c). |
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par3 |
rout, outer photosphere radius in "spherisation radius" units. |
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par4 |
theta, half-opening angle of the cone. |
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par5 |
incl, inclination angle of the funnel. Affects mainly self-occultation and relativistic boost effects. |
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par6 |
valpha, velocity law exponent, v goes as rvalpha. |
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par7 |
gamma, adiabatic index. It affects the inner, hotter parts of the flow, therefore we set is to 4/3 by default. |
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par8 |
mdot, mass ejection rate in Eddington (critical) units. |
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par9 |
irrad, number of iterations for irradiation. |
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norm |
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