compact stars

This figure shows how CSOs are probably formed. When one massive star gets too close to a black hole (left), it is devoured. This causes the black hole to emit a very fast dipole jet (center). The jet extends outward and its hot edges glow with radio wave emissions (right). Credit: B. Saxton/NRAO/AUI/NSF

Cosmic Mysteries Revealed: The Short and Brilliant Lives of Compressed Compact Objects

The CSOs emit jets for 5,000 years or less and then die out. "The CSO jets are very energetic jets but they seem to end, the jets stop flowing from the source