Two scientists/astronomers from the United Kingdom have done a lot of research, by exploring huge black holes in the middle of galaxies close to our own, Milky Way. They found out that the black holes are, on average, spnning much faster than they did before. Scientists were able to notice this by using the latest technology, as well as X-ray, optical, and radio data. Astronomers also believe that almost every galaxy has a black hole in the center. Those black holes are supermassive, as they contain millions of suns. Black holes are extremely hot, and emit radiation such as gamma and X-rays. This radiation can be detected by space telscopes that were brought into space by NASA. As well as radiation, black holes area ssociated with what we call twin jets, and those twin jets are believed to be affected by the black holes' accretion disk, or the matter that swirls around the black hole.
It is believed that the spins of the black holes are very important, but scientists did not yet figure out their evolution, as well as why they are becoming faster over time.
By observing the black holes, scientists were able to get info about the population or number of black holes, and reduce the spread of the immense power of the jets. Then, by making an accurate estimate of how fast matter is acquired by the black holes, astronomers can use a number of physically-based equations to calculate how fast they are spinning.
In the past, the Universe wasn't as big as it is today, it was onlt half of it's size today, and it is believed that back then the black holes didn't have a fast spin, but as the universe continued to grow and expand, the black holes began to get faster and faster. This means that the black holes are spinning at an alarming rate, faster then ever before!
This is the first time that scientists are actually proposing a hypothesis for the evolution of black holes. Some astronomers have also suggested that the black holes that are actually swollowing light, and other matter will spin with much less speed, then the ones joining with other black holes.
With the knowledge that they gained about black holes, scientists have also started proposing more hypotheses about how some of the black holes are formed. Their results suggest that black holes somehow spun up by themselves, by joining with some other existing black holes of same or similar mass. The result of this is a faster spinning black hole.
**info from http://www.sciencedaily.com/releases/2011/05/110523074954.htm
It is believed that the spins of the black holes are very important, but scientists did not yet figure out their evolution, as well as why they are becoming faster over time.
By observing the black holes, scientists were able to get info about the population or number of black holes, and reduce the spread of the immense power of the jets. Then, by making an accurate estimate of how fast matter is acquired by the black holes, astronomers can use a number of physically-based equations to calculate how fast they are spinning.
In the past, the Universe wasn't as big as it is today, it was onlt half of it's size today, and it is believed that back then the black holes didn't have a fast spin, but as the universe continued to grow and expand, the black holes began to get faster and faster. This means that the black holes are spinning at an alarming rate, faster then ever before!
This is the first time that scientists are actually proposing a hypothesis for the evolution of black holes. Some astronomers have also suggested that the black holes that are actually swollowing light, and other matter will spin with much less speed, then the ones joining with other black holes.
With the knowledge that they gained about black holes, scientists have also started proposing more hypotheses about how some of the black holes are formed. Their results suggest that black holes somehow spun up by themselves, by joining with some other existing black holes of same or similar mass. The result of this is a faster spinning black hole.
**info from http://www.sciencedaily.com/releases/2011/05/110523074954.htm
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