What mechanism, involving rebound and particle bursts, results in the spectacular Type II supernova explosion?
Answer
The rebounding shockwave from the core impact, aided by energy carried by escaping neutrinos.
The spectacular ejection of stellar material known as a Type II supernova occurs through a two-part mechanism following the core's halt. First, the infalling outer layers crash onto the stiff, incompressible neutron core, generating a massive shockwave that moves outward. Second, this shockwave is tremendously amplified and energized by the enormous flood of neutrinos released during the neutronization of the core. The combined force of the rebound and the neutrino energy drives the remainder of the star's mass violently outward into space, an explosion powerful enough to briefly outshine entire galaxies.
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