Can two black holes spinning at the center of the milky Way?
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As found by scientists from the University of California, the black hole at the center of our galaxy might have a girlfriend. Recall that, according to conventional wisdom all the stars in the milky Way revolve around a supermassive black hole called Sagittarius a*. However, the results of a new study showed that next to it might exist second black hole. And if this statement seems surprising, to no avail. All because at the center of most galaxies are supermassive black holes. And galaxy, as you probably know, often collide and merge with each other. The result of these processes could be the existence of several black. But when faced with another galaxy? Let's deal!
Black holes in the centers of galaxies
This may surprise you, but the galaxy as all other objects in the Universe, and all living beings on our planet are born, live, develop and die. For the last 15 years, astronomers have tried to prove the existence of a supermassive black hole at the center of the milky Way. To proof succeeded with the help of Very large telescope (VLT) of the European space Observatory (ESO).
Watching the orbital motion of stars around the galactic center, the researchers came to the conclusion that the stars should move in orbits under the tremendous gravitational pull of a supermassive black hole. According to the results, the mass of Sagittarius A* almost three million times the mass of our Sun.
Given the fact that the milky Way galaxy was said about it, Stephen Hawking, «unremarkable», researchers believe that in the centers of all galaxies are supermassive black holes. Issledovateli also note that Sagittarius A* is surrounded by dozens of stars and several large gas clouds, which from time to time converge and are at a dangerous distance from the black hole. So, in a previous article we told which spins like dancing, at extremely close distance from this cosmic monster.
Since most of evolyutsioniruet galaxies, merging with other galaxies, the fact that the center of the milky Way may be one black hole does not seem so surprising. Moreover, even if the black hole near Sagittarius A* no, this does not mean that it always has been. It is possible that in the distant past, the black hole was «younger brother» or «sister». Or he is today. But if so, why do we know nothing about him?
Composite infrared image of the center of the milky Way
According to Clifford will, distinguished Professor of physics at the University of Florida and co-author of the study published in the journal , if there was a companion of Sagittarius A*, its gravity would affect the orbits of stars revolving around. So the researchers would have discovered the second black hole. As the authors of the work, it's like the orbit of Jupiter perturbs the orbit of Uranus. This is because Jupiter has its own gravitational attraction.
The Understanding of this process has interested scientists because it is one of the possible ways of growth of black holes. Besides, do not forget that the merger of two black holes generates gravitational waves. About how the scientists were able to detect gravitational waves and what it means for science, read .
h2>Secrets of milky WayBecause the telescope is kind of a time machine, peering into the depths of space, we can learn much about his past. Now, scientists believe that the study of the supermassive black hole at the center of Sagittarius A* can shed light on the past of our own galaxy.
stars and Galaxies and black holes are very strange objects
If the second black hole is found, the discovery may point to other processes that lead to the fact that in the centers of galaxies are spinning these cosmic monsters. In addition, the opening is able to challenge contemporary perceptions about the merger and evolution of galaxies. At the same time, the lack of a second black hole means that the milky Way is not faced with major galaxies is at least 10 million years.
Since the mass of Sagittarius A* is 4 million times the mass of the Sun, it actually makes it one of the largest black holes in the Universe. So if in the past there was a collision with another galaxy, it was insignificant. Most likely Sagittarius a* was formed as a result of mergers with smaller dwarf galaxies. Currently, however, the exact answer to the question of how black holes located in the center of the milky Way.
the Cosmos is a strange place, in the center of our galaxy may well be a few black holes – the most mysterious objects in the Universe
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