According to a new study published by researchers at Cardiff University in the UK, A mysterious twisting motion detected in two orbits black holes in collision, named precession. Until then, the phenomenon had only been predicted by Einstein in his theory of gravity.
Study published in scientific journal nature It reveals the first observation of the effect on black holes. ten billion times faster. Scientists found the binary black hole system via gravitational waves collected by the Advanced LIGO and Virgo detectors in 2020. GW200129.
In addition to visualizing the effect predicted by Einstein, one of the observed black holes is about 40 times larger than our Sun and is probably the fastest found among gravitational waves. In fact, its size was responsible for warping space and time such that the system’s orbit began to oscillate back and forth.
“We always thought binary black holes could do that. We hope to find an example of the first detections of gravitational waves. “We had to wait five years and more than 80 separate detections, but we finally found one,” said Mark Hannam, professor at Cardiff University’s Gravity Research Institute.
Precession in black holes
To give an example, the motion of the orbit may be the oscillation of a top, but in Einstein’s general relativity, the motion is so weak that it is an almost imperceptible effect. Fortunately, the observation made in 2020 claims that the effect is about ten billion times stronger than normal – the most recent similar observation showed that it took more than 75 years for the precession to begin.
According to Cardiff University researcher Jonathan Thompson, identifying the effect is not so easy, as gravitational waves are weak and needing to use “the most sensitive measuring instrument in history” to detect them. Therefore, they had to conduct a very careful analysis.
In 2023, a new survey of the international network of gravitational wave detectors will be conducted, so that it will be possible to better understand whether the novelty is a rare exception or whether the signal is scattered in our universe.
Source: Tec Mundo
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