Two black holes collided – now we know what it sounded like
In a physical strangeness, the frequencies of these gravity waves are heard when they are converted into a sound wave, so you can listen to the “chirping of a black hole collision.
As it can hear the difference between a gong and a cow bell of your ear, astrophysicists can analyze the fluctuations, masses and spins that spread after a black hole accident called “down the people.
The January 14 signal has passed by 1.3 billion light years, and a thousand times smaller than a proton, or 700 trillion times smaller than the width of a human hair, reached the Earth as an almost unceasant tremor.
These signals can only be captured by a triple observer containing some of the most sensitive measuring devices called Ligo-Virgo-Kagra.
The observations bounce lasers between the mirrors, the kilometer is separated from each other, and the fluctuations in the space-time detect gravity waves when making small cuts into the laser’s beam.
Signals are weak but strong, and scientists are equipped with a new way to discover the universe beyond perception of light, such as cosmic x -ray and radio waves.
The ligo detector in Louisiana splashes a laser beam between the mirrors with 4 kilometers of intervals to detect almost non-perceived fluctuations in space-time caused by the collision of black holes.
“Real data comes as a Wiggly line, Clar Clarke said. “Taking all these wiggling is my job – in this case, very well -measured – and actually find new physics about black holes from them.
“This special merger provided us the most clear gravity wave signal that we have seen so far, which has made it perfect to test Einstein’s general theory of relativity and the black hole law of Stephen Hawking’s law.”
Hawking’s idea is attributed to the second law of thermodynamics, which argues that the universe will always bend towards chaos; The overall disorder of any system or “entropy kal remains the same or the same and will never be ordered. (Whipped eggs are never solved by itself).
The colliding black holes, such a powerful gravity, these super areas, even light can not attract, is the ultimate test of this theory.
Stephen Hawking wanted to test one of his basic theories about the universe after the gravity waves were first identified in 2015.Credit: Matt Dunham
Hawking concluded that a black hole was coded in the surface area of the entropy; If the chaos of a black hole increases, its size increases. Add two black holes and the overall surface area – and entropy – should grow.
“Black holes are still a mysterious and still unclear how they fit the laws of physics in the universe. It was definitely not exactly clear that they would follow Hawking’s field theorem,” Clarke said.
Hawking wondered if he could allow the 2015 ligo detection to test his theory.
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He passed away in 2018, but before this happened, the article published in the Prestige Journal of Physics on Thursday Physical Review Letters He proved him correctly: the last black hole was larger after the collision.
Dr Ling Sun, another partner of Anu and Ozgrav’s research, said, “This is a turning point,” he said.
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