A rotating star with sufficient mass can form a black hole characterized by a ring singularity, as opposed to a point singularity. This phenomenon occurs due to the angular momentum of the star, which influences the structure of the resulting black hole. The concept is well-documented in astrophysical literature and is further explained in resources like the Wikipedia article on black holes.
PREREQUISITESAstronomy students, astrophysicists, and anyone interested in the mechanics of black hole formation and the nature of singularities.
Have you looked at the explanation in the Wikipedia article?Irfan Nafi said:If a star with enough mass to become a black hole is rotating before it becomes a black hole, then the singularity of the black hole will actually be a ring singularity. How is it possible?