Recently, astronomers captured the first radio images of the supermassive black hole Sagittarius A* located at the center of the Milky Way. This helps scientists learn a lot of new things about black holes, but the origins of IIGT remain a mystery.
Now in a new study, scientists hope to solve the mystery of the origin of black holes from dwarf galaxies. In this study, they found a way to survey the nearby universe, so that they could obtain information about Black hole development in a dwarf galaxy.
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Hidden treasure in the dwarf galaxy
In a recent study published in The Astrophysical Journal, researchers from the University of North Carolina at Chapel Hill sought to find the answer to this question in tiny black holes found in dwarf galaxies. They found such galaxies to be a treasure trove of missing rings that could explain the growth of supermassive black holes.
From small to big
Supermassive black holes are located at or near the center of galaxies, which contain millions and billions of solar masses. The answer to how it became so massive is found in the hierarchical model. According to this, planets and galaxies form on a small to large scale. The formation of the Milky Way also began with the first gas clouds.
How the Milky Way became a huge galaxy
14 billion years ago, the Milky Way was a small galaxy, but gradually a second small galaxy merged with it and this process continues to this day. The nearby Andromeda Galaxy will also merge into the Milky Way after a few billion years. So far there are about 20 small galaxies roaming near the Milky Way, which will merge into it.
Black Hole Growth Candidate
Similarly, scientists believe that dwarf galaxies will have black hole structures that continue to grow. Astronomers have discovered such growing black hole candidates by conducting a new survey of the nearby universe. In fact, the North Carolina team has discovered many of these dwarf galaxies. Their study began by investigating the source of supermassive black holes.
Growth Through Integration
Scientists believe that black holes may have grown out of merging other black holes, and the hierarchical pattern suggests this. The merger of small black holes with stellar mass, especially in dense atmospheres containing dwarf galaxies or star clusters, will cause black holes to become massive.
How was this growing black hole discovered?
Such growing black holes appear in massive bright galaxies. But to find out their evolutionary role in dwarf galaxies, the researchers analyzed galaxy data from several observations. They also found plenty of evidence of growing black holes. Most notable is the strong emission coming from the region around this black hole.
The researchers focused on the active black hole at the center of this dwarf galaxy, called the active galactic core. Its bright emission can be ruled out by the other possibility that it simply comes from a growing black hole.
Researchers are now exploring to explain the evolution of arc black holes on this basis. They say that once black holes grow, there is still much to learn.
(with entries from scientific journals)
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