A Black holes They have long been objects loaded with a mystery. Since astronomical tools are improving, more and more accurate conclusions were made about them. No one was photographed! But if there was something equal or more amazing than it was a demonstration, that there are gravitational waves, indignation in space-time formed by a clash of two black holes. Its existence was theoretized, but in 2015 it could be found for the first time. Now, 10 years later, they can be found not only, but they managed to study more carefully, discovering the two greatest physicists in history, Stephen Hawking and Albert EinsteinThey were right with their predictions about this phenomenon.
The first forecast, Hawking is associated with The size arising as a result of the merger of black holesThe field as for the second, data on black holes that can simply be calculated using The general theory of relativity of Einstein.
Einstein received the Nobel Prize. Stephen Hawking never reached one, although some works in which he had already participated They meant a reward to their classmatesThe field but, knowing that we now know about his predictions, it is clear that if he still lives, he will be a firm candidate for the famous Prize of the Swedish Scientific Academy. The reality is that those who are responsible for the distribution of awards are often quite unfair, especially in relation to women. But Hawking would give it safe.
Face to face with a collision of two black holes
In 2015, a gravitational wave was discovered for the first time caused by a collision of two black holes. Einstein himself has already predicted its existence. However, until that moment it was not shown that they really exist.
Everything was possible thanks LigoA set of gravitational wave detectors using a double laser interferometry located on the Hanford (Washington) and Livingstone (Louisiana) area, both in the United States. Over time, cooperation was installed with a maiden, another observatory located in Italy, and Kagre, installed in Japan. This made it possible to detect new gravitational waves, while improving the methods aimed at their analysis. But still being, as sophisticated as it has just been published in Physical review lettersField
The conclusion achieved through cooperation Ligo, Virgo and KagraHe allowed to establish that Hawking and Einstein were right. But what did each of them say?
According to Hawking, black holes will never reduce their size
When two black holes collide, we may think that some of them get a contract, causing a smaller black hole. However, Steven Hawking’s calculations made him predict that Event Horizon From a black hole, this limit, from which nothing can avoid its attraction, can never reduce its size.
The English physicist made this calculation in 1971. He indicated that, regardless of how much the clash that occurs, and many gravitational waves that are generated will not be obtained smaller than the sum of two black holes.
All this was calculated on this A new detection of gravitational waves. When we throw a stone into the lake, and waves form in the water, their behavior can tell us a lot of things on the stone. In this case, the same thing happens. However, so far the methods of studying black holes and gravitational waves have not been accurate enough to determine this.
Einstein knew a lot about gravitational waves
Albert Einstein J. predicted the existence of gravitational waves. Therefore, we should not surprise us that their theories can be associated with these new conclusions.
The sound is still the result of the transmission of vibration. They differ when they come from a great bell than when they come with a small cow. Sound can tell us what object we listen to.
In the case of gravitational waves, so far The bell received from the collision could not be detectedThe field is the reason that there were no accurate instruments to differentiate the sound of the vibration of the black hole of reverb, which occur after the end of the merger. It was already possible. And, thanks to this, the fact that Einstein was already predicted with the theory of relativity of Einstein was already confirmed.
This is a hypothesis made in 1963 by another physique: Roy Kerr. This used Tiori Einstein the general theory of relativity to mathematically describes black holes with the help One equationThe field of the equation showed that black holes can be described only with two characteristics: spin and mass. They would be much easier than we thought. As explained in the statement of this conclusion, with new higher data, scientists can measure the frequency and duration of a smooth hole in the black hole. With greater accuracy than when, liba. This allowed them to see that in fact a black hole is a simple object described only by mass and turn. Tintineo helped them understand what the bell looked like. In the end, Hawking and Einstein, as well as Kerra, did not have the instruments of Ligo, Virgo or Kagra, but they did not need them to be right.
Source: Hiper Textual
