kuriteru t1_irh9n56 wrote
No, the density of matter needed to exert enough gravity to create an event horizon, the "black hole" part of the black hole, will in herently exceed the saidatters Swarzchild radius causing it to collapse into a singularity
ExactCollege3 OP t1_irhkxfs wrote
But the Swarzchild radius increases with mass linearly, while the radius of a circular body only increases with the cube root of mass, so could a neutron star get big enough to overcome the swarzchild radius without collapsing into a singularity? What is collapsing and when does it happen? How do we know if it’s a singularity?
kuriteru t1_iri7yns wrote
Its more about density than just mass, every mass has S radius that it tips over into blackhole territory but will not trap light before that point.
Only singularities can warp space time enough to trap light making a blackhole it also doesn't help that we lack the math to fully explain blackholes entirely, all values involved end at either 0 or infinite or some impossible arithmetic involving the two extremes
Gprime5 t1_irl6jjr wrote
You don't really need the density either.
If you had enough air at standard Earth atmospheric density, then that would create a black hole.
The calculation works out that 3.8 Billion kg of air at standard Earth density will form a black hole.
ccdy t1_irj3um8 wrote
Neutron stars, like other astronomical bodies made of degenerate matter, shrink in radius as their mass increases.
[deleted] t1_irhqvz9 wrote
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