This is the largest black hole whose rotation speed has been measured. Based on this, astronomers wanted
Supermassive black holes are millions or even billions of times heavier than the Sun. Astronomers believe that there is a supermassive black hole at the center of almost every large galaxy.
Their existence is not disputed, but scientists stillthey are still working to understand how they grow and evolve. One of the most important indicators that astronomers use is the rotation speed of a black hole.
During their work, the authors examined X-rayrays that were reflected from the disk of material that rotated in the quasar around the black hole. It was named H1821+643. Quasars contain rapidly growing supermassive black holes that generate large amounts of radiation in a small area around them.
The black hole that the authors studied - H1821 + 643 -is located in a cluster of galaxies at a distance of about 3.4 billion light years from Earth and has a mass of three to 30 million solar masses. Based on these data, we can conclude that this is one of the most massive black holes.
“We found that the black hole in H1821+643rotates about twice as fast as most black holes with a mass of a million to ten million suns,” said co-author Christopher Reynolds.
This is a slow speed, the team notes. The question of why this happened can be answered by understanding how these supermassive black holes grow and evolve.
Also, these data support the idea that the most massive black holes are actively growing due to mergers with other black holes or due to gas.
Supermassive black holes that grow like thisprobably often change their rotation pattern. Slow down or turn in the opposite direction. Based on this information, the authors concluded that the most massive black holes can have a wider range of rotation speeds than smaller objects.
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