Nucleosynthesis of heavy elements in the accretion disk. The steady-state model is calculated for an accretion rate of Ṁ = 0.1 M⊙ s-1 and a black hole spin a = 0.9. The top panel shows the abundance distribution of free protons and neutrons (dashed lines), as well as helium, and the most abundant isotopes of nickel, iron, and cobalt. The bottom panel shows the distribution of the most abundant isotopes of silicon, sulphur, clorium, argonium, manganium, titatnium, vanadium, and cuprum.
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