Video: BLACK HOLE IS A PORTAL TO OTHER WORLDS. Why don't even supermassive black holes have any mass?
2024 Author: Seth Attwood | [email protected]. Last modified: 2023-12-16 15:55
On April 10, 2019, a group of astrophysicists from the international project "Event Horizon Telescope", which is a planetary network of radio telescopes, released the first ever photograph of a black hole.
But could it be that THIS is a fake?
Could it be that black holes are just a scientific dogma that no one has ever proven in practice? After all, there is not a single person who would return from a black hole and tell us how great it is there.
On serious cabbage soup, they broadcast to us about global warming, about the theory of relativity, about gravity, but God knows more about that …
So maybe black holes from the same opera? *** What is a black hole? This term was introduced by the American theoretical physicist John Archibald Wheeler. He first used the term at a scientific conference 50 years ago.
The theory of black holes began to form within the framework of general relativity. True, Albert Einstein himself did not believe in the existence of black holes. What is wrong with Albert, we will see in another issue, now is not about that.
Since the black hole itself is invisible, it is possible to observe only electromagnetic waves, radiation and distortions of space around it. The picture, published by the international project "Event Horizon Telescope", shows the so-called "event horizon" of a black hole - the boundary of a region with superstrong gravity, framed by an accretion disk - luminous matter that is "sucked in" by the hole. And how the Telescope image of the event horizon is obtained is worth telling in more detail.
After all, this quality is here not because it was filmed with a mobile phone, but because the object is located only 55 million light years away from us. It was calculated that in order to see the supermassive black hole in the center of the galaxy M87, you need to build a telescope the size of the Earth. But there is no such plate yet. But there are radio interferometry technologies that increase the angular resolution.
You can take two small telescopes and separate them 100 m apart. If they work together, their angular resolution will be equivalent to a large dish. The Telescope event horizon project is no longer just an interferOmeter, but an ultra-long baseline radio interferometer with telescopes located on different continents. And such a system has a resolution equivalent to a telescope the size of the Earth.
The telescopes in the system were equipped with ultra-precise atomic clocks, equipment for faster data processing, or even atomic detectors, as in the case of the telescope at the South Pole. Atomic clocks are needed to synchronize data, because telescopes are not physically connected to a network. And data on hard disks with a total volume of 5 petabytes was transported by airplanes to the processing center. But a virtual telescope still could not collect as much signal as such a planet-sized dish would collect.
Therefore, data was added in the process of the Earth's rotation from different points, and an ever larger area of the virtual telescope was covered. Well, that's not all. Further, the obtained data went through several stages of processing by specially created algorithms.
In general, the years of work of hundreds of scientists gave such a result. This is a supermassive black hole. And there are also black holes, into which massive stars turn in the course of their evolution. Over billions of years, the composition of gases and temperature in them change, which leads to an imbalance. Then the star collapses.
A typical stellar mass black hole has a radius of 30 kilometers and a density of more than 200 million tons per cubic centimeter. For comparison: for the Earth to become a black hole, its radius must be 9 millimeters. In the center of our Milky Way galaxy there is also a black hole - Sagittarius A. Its mass is four million times the mass of the Sun, and its size - 25 million kilometers - is approximately equal to the diameter of 18 suns.
Such a scale makes some wonder: will a black hole swallow our entire galaxy? Not only science fiction writers have grounds for such assumptions: a few years ago, scientists reported about the galaxy W2246-0526, which is located 12.5 billion light years from our planet.
According to the description of astronomers, the supermassive black hole in the center of this galaxy is gradually tearing it apart, and the resulting radiation scatters hot giant clouds of gas in all directions. Torn apart by a black hole, the galaxy glows brighter than 300 trillion suns. But we can relax - our native galaxy is not threatened by anything like that …
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