Death of a Black Hole
You’ve probably heard that nothing can escape a black hole, so how can this amazing object end its life? To answer this question we have to go back to 1974, when the astrophysicist Stephen Hawking showed that a black hole should emit electromagnetic radiation. The discovery was quite impressive, since it’s known that nothing is able to escape the gravitational force of a black hole.
The process works roughly in this way: particle-antiparticle pairs are constantly created all over the universe, they come into existence and suddenly disappear by annihilating with each other. Now, if one of these pair is created on the edge of the event horizon of a black hole, one can fall into it while the other escapes, and this leads the black hole to lose mass. Moreover, the smaller is the mass of the black hole the faster it will lose mass because of the Hawking radiation.
At the very end the temperature of the black hole will become very high and it will disappear in an extraordinary burst of gamma-ray radiation.
This process that leads to the death of a black hole is known as black hole evaporation.