Physicists at the University of Sussex have discovered that black holes exert a pressure on their surroundings for the first time in science.
In 1974, Stephen Hawking said that black holes emit thermal radiation and reported the groundbreaking discovery on this subject.
Prior to this, black holes were believed to be the last stages of a dying heavy star and to be stationary. In other words, there was a thought that they did not have any effect on their environment.
Scientists from the University of Sussex have shown that Black Holes actually have not only a temperature but also a pressure and even more complex thermodynamic systems. It's really big news for the world of astrophysics.
lucky discovery, Professors Xavier Calmet and Folkert Kuipers from the Department of Physics and Astronomy at the University of Sussex It was made by and on September 9, 2021 Physical Review DPublished in.
Calmet and Kuipers, a black hole to its entropy While working on quantum gravity corrections, they came across an unexpected information in the equations.
After further calculations and discussions, they concluded that quantum gravity can cause a pressure in black holes. It was a really exciting result.
Xavier Calmet, Professor of Physics at the University of Sussex, said:Schwarzschild "It was a complete surprise to us and exciting to find that black holes have a pressure and a temperature."
Hawking's groundbreaking intuition that black holes are not black, but have a radiation spectrum very similar to that of a black body, makes black holes an ideal laboratory for investigating the interactions between quantum mechanics, gravity, and thermodynamics.
“If you consider black holes only in general relativity, it can be shown that they have a singularity at their centers that should collapse the laws of physics as we know them.
When quantum field theory is incorporated into general relativity, a new definition of black holes can be found.
“Our work is a step in that direction, and while the pressure exerted by the black hole we are working on is very small, its presence opens up many new possibilities that encompass studies of astrophysics, particle physics and quantum physics. ”
Folkert Kuipers, PhD researcher in the School of Mathematics and Physical Sciences at the University of Sussex, said: "It's exciting to work on a discovery that improves our understanding of black holes, especially as a research student.
“The moment we realized that the mysterious result in our equations was telling us there was a pressure from the black hole we were working on was refreshing after grappling with it for months.