Findings from a recent experiment related to black holes have confirmed the existence of Hawking radiation.
In the first theory which introduced the concept of black hole, Albert Einstein described black hole as an object with such massive gravitational pull that even light cannot escape after it enters the event horizon of a black hole. However, Hawking disagreed with the concept as he stated that the black holes aren’t entirely black and they emit a stream of thermal radiation that is related to a black hole’s mass. This radiation was named after the late physicist.
In order to prove this theory, scientists created an analog of a black hole in lab by trapping 8,000 rubidium atoms in a focused laser beam to create an elongated Bose-Einstein condensate. In the experience, the scientist used a second laser to increase the potential energy on one side of the condensate which resulted in one side of condensate becoming denser than the other side. This replicates the forces of an actual black hole by using sound rather than light.
In one side of the experiment, sound is faster than the speed of the flow of the atoms. However, on the other side, the speed of sound is slower which allowed the sound to travel away from the transition. The group of scientists found that the inside the event horizon of the black hole, the signal of Hawking radiation was a correlation between the sound waves both outside and inside of their black hole. This result was consistent with Hawking’s theories regarding the existence of Hawking Radiation.