Magnetar !
An artistic representation of a magnetar surrounded by the nebula responsible for the continuum radio emission associated with some cosmic fast radio bursts.
US NSF/AUI/NSF NRAO S. Dagnello
Artist's impression of a quasar like P172 + 18.
A central supermassive black hole attracts neighboring gas. This swirls through an accretion disk at high speed into the black hole. The gas is heated to very high temperatures by friction, which leads to the release of intense UV radiation.
Twisted magnetic fields create focused jets above and below the accretion disk, which carry away part of the hot, ionized gas.
These jets are a source of the strong radio emission.
Image: ESO / M. Grain knife