yoginka: (thinking)
What is a naked singularity?
(www.quora.com/What-is-a-naked-singularity/answer/Viktor-T-Toth-1)
В ответе на этот вопрос проскочило заодно и то, что в некпоторых черных дырах можно избежать попадания в сингулярнось:
"There are, however, more complicated solutions for black holes, among them the Kerr solution for a rotating black hole, the Reissner-Nordström solution for a black hole with electric charge, or the combination of these two in the so-called Kerr-Newman solution. These solutions are characterized by multiple event horizons and more complicated singular regions (e.g., a “ring” singularity) that may even be avoidable. "

И еще интересно, что даже горизонта может не быть, тогда и получается "голая сингулярность":
"But there are more extreme cases. For instance, if a Kerr black hole rotates fast enough, it has no event horizons at all. But it still has a singularity. This singularity is no longer “hidden” from the outside. In principle, it could be studied, that is, information about it can be obtained by an outside observer. Such a singularity is called “naked”."
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