ASTRON 1010 Lecture Notes - Lecture 23: Neutron Star, Event Horizon, Degenerate Matter
Document Summary
The remains of high mass star, following a supernova, will collapse to a neutron star supported by neutron degeneracy pressure if the remaining mass is between about 1. 39m and 3m. Beyond this 3m limit, the stellar remnant collapses into a black hold, with infinite density. A black hole is an object whose gravity is so powerful that not even light can escape it. Some massive star supernovae can make a black hole if enough mass falls onto the core. In a black hole gravity crushes all the matter into a single point known as a singularity. Here it no longer is meaningful to speak of space and time, much less space time. Jumpbled up at the singularity, space and time cease to exist as we know them. Either mass would form a black hole if you could shrink it to <1cm. It is extreme concentration of mass and resulting gravity that makes a black hole.
