What is the expected core remnant difference between a Type II and a Type Ia supernova event?

Answer

Type II almost always leaves a compact object, while Type Ia often leaves none.

The nature of the progenitor star dictates the remnant left behind. A Type II supernova results from the core collapse of a single massive star, which almost inevitably leaves behind a compact object, either a neutron star or a black hole, at its center. Conversely, a Type Ia supernova typically results from a white dwarf in a binary system accumulating mass beyond stability and detonating completely. Because the white dwarf detonates entirely, astronomers generally expect these events to leave behind no compact core whatsoever; the star disintegrates fully.

What is the expected core remnant difference between a Type II and a Type Ia supernova event?

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After A Supernova Event, What Is Left Behind? - Physics Frontier

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