Any black hole. Rotating one also has a singularity, it's just not a point but a zero-volume circle.
I'm not sure what exactly neutrons collapse into (or maybe they remain neutrons), but as long as GR works there, they inevitably all come to the singularity.
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timeasmymeasure
Re: Matter collapse inside a black hole
Date: 2020-08-10 06:17 pm (UTC)I'm not sure what exactly neutrons collapse into (or maybe they remain neutrons), but as long as GR works there, they inevitably all come to the singularity.