I'm quite confused about the explosion of a Type II supernova.
As far as I understand, when the Fe-56 core has been created, and the star has all the other layers around it, it starts to collapse, because, yeah, Fe-56 cannot give energy by fusion. This in turn gives a huge pressure on the core, and it exceeds the Chandrasekhar limit, and collapses further.
Now, during this collapse, the star becomes so hot and dense, that photodisintegration sets in, and produces a lot of neutrons, and electrons and proton fuse into neutrons and neutrinos as well. So now we a core with neutron degeneracy.
When this neutron degeneracy happens, the core sort of stops collapsing, and the layers outside the core, which is still collapsing, hits the hard surface of the neutron star surface, and bounces outwards like a tennis ball on a basket ball - i.e. a huge shock wave.
Now, my problem is, that I've also read, that during the collapse into a neutron star, the star gets so hot, that if much hotter, the neutrons will "boil" away. So in order to cancel this, it produces a lot of neutrinos, which can't escape the neutron star surface that well, and we then get a huge energy burst in the outer layers of the neutron star, which at last burst through everything in a major explosion and we get our supernova, leaving the core of the neutron star alone.
So basically: What causes the supernova explosion ? Is it the in-ward collapse from the outer layers, giving rise to the out-ward bounce when it hits the surface of the star, or is it actually the neutrinos that are the main force ? Or does the in-ward collapse only raise the temperature of the star to achieve the high temperature in order to produce the extra neutrinos, or something else I've missed ? :)
Thanks in advance.