  We consider the evolution of a closed Friedmann brane irradiated by a bulk
black hole. Both absorption on the brane and transmission across the brane are
allowed, the latter representing a generalization over a previously studied
model. Without transmission, a critical behaviour could be observed, when the
acceleration due to radiation pressure and the deceleration introduced by the
increasing self-gravity of the brane roughly compensate each other. We show
here that increasing transmission leads to the disappearance of the critical
behaviour.
