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The luminosity of the most massive black hole yet discovered is 4.3 x1014 Lo. Assuming that...

The luminosity of the most massive black hole yet discovered is 4.3 x1014 Lo. Assuming that this luminosity is generated by the in-fall of matter into a black hole, calculate the rate in Mo yr-1 at which matter is being accreted into this black hole. Calculate the minimum mass that this black hole must have to remain gravitationally stable

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Answer #1

If a mass m falls on a big mass M of radius R due to gravitational attraction ,energy released due to accretion is given by
(GMm/R).

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