What event is generated immediately after the infalling material slams into the rigid, newly formed neutron core?

Answer

A tremendous outward-moving shockwave.

The core collapse halts abruptly when the central matter is compressed to nuclear densities, effectively creating an impossibly rigid core composed primarily of neutrons, where repulsive forces resist further compression. The stellar material that was rushing inward at tremendous speed, having traveled across most of the star's radius, impacts this newly rigid structure. This sudden, violent collision causes the infalling material to rebound dramatically, launching a powerful, outward-propagating disturbance known as a shockwave. This shockwave is the primary mechanism intended to drive the ejection of the star's outer layers, resulting in the brilliant supernova explosion.

What event is generated immediately after the infalling material slams into the rigid, newly formed neutron core?

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