The evolution of black hole mass and angular momentum

We show that neither accretion nor angular momentum extraction is likely to lead to signicant changes in the mass M 1 or angular momentum parameter a of a black hole in a binary system with realistic parameters. Current values of M 1 and a therefore probably reect those at formation. We show further that sufciently energetic jet ejection powered by the rotational energy of a black hole can stabilize mass transfer in systems with large adverse mass ratios, and even reduce the mass transfer rate to the point where the binary becomes transient.

Перевод пока недоступен