THE STABILITY OF A STATIC BLACK-HOLE WITH MASS MULTIPOLE MOMENT
源具有质量多极矩的静态引力场稳定性研究

By studying the Hawking radiation near the horizon of a static black-hole with a multipole moment, we find that its existence would violate thermodynamic laws of black-hole. Under a perturbation of dust, this kind of gravitational field is unstable. So we guess that this kind of black-hole does not likely exist in the universe.