Publication date: n/a 1981
Abstract:
Consideration is given to the evolution of stationary axisymmetric
rotating Kerr naked singularities due to the accretion of matter from
thin corotating disks. Within the framework of the Page-Thorne model of
accretion disks, it is shown that the naked singularity must evolve
towards an extreme black hole state provided sufficient mass is
accreted. Analytical expressions for the time evolution of the Kerr
naked singularity as a function of initial mass and angular momentum are
then obtained for the cases of a constant accretion rate, an accretion
rate proportional to black hole mass, and an accretion rate
self-regulated at the critical rate. It is pointed out that for
accretion in binary systems, singularities of mass less than 10 solar
masses may be converted into black holes only for angular momentum very
close to unity. Effects of the capture of the radiation emitted by the
disk by the singularity or the disk itself and of changes in disk
geometry at the later stages of black hole conversion are also
considered
Authors:
Stuchlik, Z.;