A physicist from the Technion-Israel Institute of Technology in Haifa, Israel has shown that Stephen Hawking’s 1974 theory about black holes could be true. Apparently, it is not true that nothing can escape black holes because tiny amounts of electromagnetic radiation, also known as the Hawking radiation, can still escape from it, which strips away its mass over time, shrinking black holes eventually.
According to physicist Jeff Steinhauer, he was able to create an artificial black hole that produced artificial electromagnetic radiation. The findings are available in the journal Nature.
Steinhauer used rubidium atoms, which were cooled to just above absolute zero, inside a test tube that measured just a few millimeters long. Consequently, the physicist was able to create entangled pairs of sound particles, which are also known as phonons.
These phonons were inside a tiny amount of liquid. Steinhauer then sped them up using a laser. As a result, these phonons moved faster than the speed of sound.
When one member of the pair moved past the event horizon, the other particle moved in the other direction. According to Steinhauer, he repeated the experiment up to 4,600 times in six days.
Other physicists applauded Steinhauer’s findings. However, others say that the experiment is not a good evidence for Hawking’s theory.
Moreover, other physicists assert that an artificial black hole is not a good substitute for the real one. Some scientists, like Ulf Leonhardt, a physicist at the Weizmann Institute of Science in Rehovot, Israel, also felt that the experiment seemed incomplete. Still, Leonhardt acknowledges that Steinhauer provided a pioneering a paper.
“This experiment, if all statements hold, is really amazing,” points out Silke Weinfurtner, a theoretical and experimental physicist at the University of Nottingham in the UK. “It doesn’t prove that Hawking radiation exists around astrophysical black holes.”