In astronomy, blitzars are a hypothetical type of neutron star, specifically pulsars that can rapidly collapse into black holes if their spinning slows down.
This makes the neutron star a typical but doomed pulsar whose strong magnetic field radiates energy away and slows its spin.
At that moment, part of the pulsar's magnetic field outside the black hole is suddenly cut off from its vanished source.
[5] As of January 2015, seven[6] radio events detected so far might represent such possible collapses; they are projected to occur every 10 seconds within the observable universe.
[5] Because the magnetic field had previously cleared the surrounding space of gas and dust, there is no nearby material that will fall into the new black hole.