Black holes are one of the deepest secrets of the universe, and when it comes to detect them, it is near impossible due to its size, even observing super massive black holes are hardest.
The recent discovery is about a quasar that is 200 million times massive than our Sun, named RX J1131-1231, is about 6.1 billion light years away. Because it is so far away, studying it clearly is a hard or even near impossible one.
But fortunately there is a galaxy right between the quasar and Earth, there for making a lensing effect known as gravitational lensing, predicted by General Relativity theory by Einstein.
In the case of our quasar, the gravitational lensing create four separate images of the same quasar and the size of each image is as big the galaxy itself.
Researchers combined those for images to study the quasar. What they have found is the most important one, as the iron atoms orbiting the quasar in near impossible speed. Researchers found that the quasar is rotating at least 66% of maximum allowed speed by general relativity and probably as much as 88% of the maximum allowed speed.
It is such a fascination that even 6.1 billion years ago, a black hole is manage to gather gas and matter to become such fast rotating quasar.
Source: arstechnica.com
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