What is the critical remnant core mass, related to the Tolman-Oppenheimer-Volkoff limit, that determines if a black hole forms instead of a Neutron Star?
Answer
Roughly three solar masses.
The ultimate fate of the collapsing core hinges precisely on its final mass after the explosion. If the remnant mass is below approximately three times the mass of our Sun, the neutron degeneracy pressure is sufficient to stop gravity, resulting in a neutron star. However, if the remnant mass exceeds this critical threshold of roughly three solar masses, no known physical force, including neutron degeneracy pressure, can resist the pull of gravity. Consequently, the collapse continues indefinitely, leading to the formation of a singularity, which defines a black hole.
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