On the feeding of the black hole at the center of the Milky Way

Astronomers recently observed a huge black hole at the center of the Milky Way, which is estimated to be the second largest black hole in the Milky Way. The findings have been published in the latest issue of the journal Astronomy and Astrophysics.

Just three years ago, astronomers observed the Milky Way orbiting a supermassive black hole that is 26 million times more massive than the Sun. Now a smaller black hole with 1,300 times the mass of the Sun has been discovered, moving just 3 light-years away.

A team led by Genen Pierre Mérald, an astronomer from the Institute of Astrophysics in Paris, France, observed a very bright region at the core of the Milky Way called IRS13, which astronomers previously thought was a single star. At the Gemini Observatory at the summit of Mauna Kea on Hawaii's Big Island, astronomers used infrared observation to find that IRS13 is actually a constellation of seven stars, only light-years apart. Using data collected by the Hubble Telescope and the Chandra X-ray Observatory, they estimated from the motion of the seven stars that they must be orbiting around an intermassive black hole, called IRS13E, which orbits Sagittarius A* at a speed of about 280 kilometers per second.

"This is the first time that a mid-mass black hole has been discovered in our Milky Way," Maillard said. Scientists also found that IRS13 emits intense X-rays and has a long tail that masks the black hole.

Faint X-rays can be detected in many places throughout the Milky Way, suggesting that there may be many "pocket-sized" black holes close to Earth, and these small black holes are only 1 to 2 times the mass of the Sun, but this is only speculation and needs to be further confirmed.

According to Melald's analysis, these seven stars may be the remnants of a massive star group, which is likely to gradually lose its original mass due to the attraction of the supermassive Milky Way**. The results of this observation help to confirm the hypothesis that supermassive black holes exist at the centers of many galaxies and gradually increase their mass by absorbing the mass of other small black holes and stars in the galaxy.

This may also explain why so many massive stars are found in this region. When a gravitational star orbits A* Sagittarius, it prevents the formation of new stars from clouds of dust and gas. It is possible that these stars formed far away in the Milky Way and were then attracted to their current location by the huge mid-medium black hole.

Judging by their size and color, these 7 stars may be short-lived, or they may burn out sooner than we expected. (Chen Order).

Black holes are theoretically capable of swallowing the Milky Way, and the definition of a black hole is a celestial body that can swallow any matter. The closest black hole to the Milky Way is Centauri A, and it will take at least 5 billion years to swallow the Milky Way, at least until the Sun dies.

In theoretical knowledge, black holes are indeed capable of swallowing the Milky Way. A black hole is a special kind of celestial body that exists in the universe, with a large density but a small size, with a strong gravitational pull, so strong that even light cannot escape, so substantial matter like the Milky Way will indeed be swallowed by black holes.

Although it is theoretically possible for a black hole to swallow the Milky Way, it still requires many other external conditions, such as distance, size, velocity, and so on. If a large enough black hole is tens of millions of light-years away from the Milky Way, the time to engulf will also become very slow, and the size of the black hole will affect the speed of engulfment.

The closest black hole to the Milky Way is called Centauri A, and this black hole is located in the center of the Milky Way and is part of the constellation A. However, theoretically speaking, it will take at least 5 billion years for the auspicious Centauri A star to swallow the Milky Way, and at least after the sun disappears, the Milky Way will still exist.

It's possible, but it's not necessarily.

Super black holes. is a type of black hole with a mass of 100,000 to 10 trillion times the mass of the sun. Scientists believe that in the galactic heart of all galaxies, including the Milky Way, there will be supermassive black holes. All superblack holes formed at the same time as galaxies at the beginning of the universe more than 10 billion years ago.

Interaction. A few days ago, astronomers announced that the most massive black hole in the universe has now been detected, and its mass is 18 billion times that of the Sun. At the same time, through the observation of a small black hole next to this huge black hole, astronomers confirmed Einstein's theory of relativity with the phenomenon of a strong gravitational field.

The largest black hole in the universe is six times the largest black hole recorded in astronomy, and it is so massive that it is equivalent to a small galaxy, 3.5 billion light-years from Earth, and formed at the center of the OJ287 quasar. A quasar is an extremely bright star whose object will continue to spiral into a large black hole and release a large amount of radiation. However, the OJ287 quasar contains two black holes, in addition to a slightly smaller black hole, a combination that allows astronomers to "weigh" the largest black hole in the universe more precisely.

This smaller black hole is 100 million times the mass of the Sun and orbits the larger black hole, taking 12 years to make each cycle. The two black holes are so close together that the small black hole can squeeze and collide with the material around the large black hole twice as it orbits around it, and each collision causes the OJ287 quasar to suddenly become brighter. In Einstein's theory of relativity, small black holes rotate on their own or produce propulsion, so that the distance between the two black holes will get closer and closer, and this phenomenon also exists between the solar system and the orbit of Mercury, although the ratio of Mercury's orbit is lower.

In OJ287, the gravitational field of the larger black hole caused the orbit of the small black hole to tilt incliningly by an incredible 39 degrees, which significantly affected the collision of the small black hole with the surrounding material of the large black hole. According to astronomical observations, OJ287 quasars have more than ten explosive bright phenomena, and the astronomical team led by Maury Waltenn of the Turla Observatory in Finland has measured and analyzed the motion level ratio of small black holes, and they estimate that the mass of the larger black hole is about 18 billion times that of the sun based on the orbital period of the small black hole.

Auxiliary galaxy formation.

Dr. Robert Marcy of the Royal Astronomical Society said the findings show that the Milky Way forms around black holes in the same way that pearls form around sandstone. Dr. Marcy said"While we think black holes are a bit of a threat and can cause trouble if you get too close, black holes also helped shape the Milky Way.

Not only our galaxy, but everything else. "

Black holes pull matter together, he said, and that's how the first generation of stars and the Milky Way may have appeared.

The fate of all matter in the universe is to fall into the supermassive black holes of galaxies**, but this time is too long, long enough to ignore it. Eventually, the black hole will also disintegrate due to its own evaporation, which is even longer. Eventually, the protons decay, the entropy no longer increases, and the universe returns to heat death.

Theoretically, it is possible, to be precise. Don't say yes! Not so absolutely!

The super-black hole at the center of the Milky Way is not very active at the moment, which means that the engulfing process is not violent, and it is difficult to calculate the time it will take to swallow the entire galaxy at this rate. In another 7 billion years or so, the Milky Way and the Andromeda Galaxy will collide and eventually merge into an elliptical galaxy, and the black holes at the center of the two galaxies will merge. Only because the universe continues to expand, this large elliptical galaxy will have difficulty encountering other galaxies, and the central black hole will gradually absorb the objects and gases in the elliptical galaxy, and eventually the entire galaxy will be left with only a super-black hole.

As the temperature of the universe continues to drop, black holes will lose mass through Hawking radiation and eventually evaporate completely. At that time, the black hole will disappear, but the length of time is difficult to measure in numbers.

Black holes don't swallow up the entire universe, all galaxies currently have a supermassive black hole at the center, and it's only a long time before they swallow the entire galaxy, but it's also a long process. But the galaxies are so far apart that how will the universe evolve next, will it stop expanding and turn to contracting? In addition, the mass of black holes will not increase indefinitely, and scientists believe that while black holes absorb matter, they will also release matter at the white holes in the universe, forming a wormhole.

Of course, this is all speculation, and there is no theoretical basis yet.