What astronomical object emerges sometimes from supernova instead of a black hole?

Magnetar
526
Blazar
271
Quasar
950
only a black hole can emerge from supernova
468
A magnetar is a type of neutron star with an extremely powerful magnetic field. The magnetic field decay powers the emission of high-energy electromagnetic radiation, particularly X-rays and gamma rays. As of March 2016, only 23 magnetars are known, with six more candidates awaiting confirmation.
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Ninjai
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