Theory 91/Cosmic/Black hole growth
Black Holes Balance Accretion and Feedback
The claim
Black hole mass is set by the ratio of accretion rate to feedback efficiency, so a high-efficiency feedback loop caps growth at a predictable mass.
01Mechanism
Accretion feeds the hole while feedback heats the gas that would feed it; the ratio sets the self-limiting mass.
02Prediction
Final mass should track the ratio.
03Refutation
Mass tracking initial seed would remove feedback.