A lot of the star in the disc, a lot of the star in the jets, precisely how much of the star actually falls into the black hole?


There is no correct answer for all cases. Of course the upper-bound is 100% but in practice, even if nearly all of the matter would fall in, a huge amount of energy will be radiated as x-rays and $\gamma$-rays due to heating in the accretion disk.

The dynamics of in-falling matter are quite complicated and very sensitive to initial conditions. Currently super computers are required to answer this question in any detail for a given set of initial conditions.

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