On the entropy of self-gravitating systems

On the basis of the phenomenological thermodynamics of open systems in the framework of the field theory of gravitation the maximal possible flux of entropy of a self-gravitating system is estimated to be deS/dt ∼ k/h Me2, and the absolute amount of the entropy by which the entropy of the external world can be raised in a collapse process is estimated at ΔeS ∼ kG/hc M2. These relations, in contrast to the Bekenstein-Hawking formula for the entropy of a black hole in the general theory of relativity, are obtained by a limiting process from the Newtonian thermodynamics of classical self-gravitating systems