A quasar has been discovered in a dark corner of space - over 13,03 billion light-years away - and contains an oversized black hole 1,6 billion times the size of the Sun.
The quasar, named J0313-1806, dates back to a time when the universe was only 670 million years old. J0313-1806 breaks the record for the first black hole, dethroning the previous black hole J1342 + 0928, which was discovered in 2017 and existed when the universe was just 690 million years old.
The discovery, announced at the 237th Meeting of the American Astronomical Society on Tuesday, sheds light on the environment of the ancient universe. But logically, the discovery raises a number of questions.
Quasars are extremely bright objects - the brightest in the world. They are at the center of galaxies, but at their center is an oversized black hole, millions to billions of times larger than the sun. The intense gravity surrounding the black hole collects gas and dust and may even separate stars, leaving a trail of debris in one disk that surrounds him. The wreckage moves with incredible speed and emit extreme amounts of energy, which observers in Earth can be seen as bright light.
J0313-1806, for example, shines 1.000 times brighter than the whole Γαλαξία.
Astronomers were able to locate the quasar using several ground-based observatories, such as the Atacama Large Millimeter / submillimeter Array (ALMA) in Chile, the world's largest radio telescope, and two observatories at Mauna Kea, Hawaii. The comments enabled researchers confirm the distance with great accuracy and examine some of them properties of the oversized black hole in the center of the quasar.
Their calculations concluded that the mass of the black hole is about 1,6 billion times greater than that of the sun. But this creates a problem. Because the black hole can not be older than 670 million years, traditional theories of black hole development can not explain its size in such a short time time. the current understanding Our black hole formation includes collapsing stars, but researchers say that could not explain why the J0313-1806 black hole is so large.
This scenario suggests that it is not a star collapsing in a black hole, but rather huge amounts of cold hydrogen gas in a cloud. The theory of immediate collapse is one way to explain why astronomers find such huge black holes in universe, but it is not the only important find for the team.
The team also speculates that the oversized black hole is devouring the equivalent of 25 suns each year - which means it is still growing.
The space telescope James Webb, which is set to begin its journey on October 31, could help scientists open another window into the universe by revealing how these oversized beasts appear.
Source of information: cnet.com