An international team of astronomers discovered in the primitive Universe 83 quasars fed by supermassive black holes, which "considerably" increases the number of black holes known at that time, when the cosmos was less than 10 percent of its current age.
The discovery was made thanks to a camera of the Japanese Subaru telescope, located in Hawaii, and, according to astronomers, the discovery confirms how common supermassive black holes were at the beginning of the history of the Universe.
The American Astronomical Society recalls in a press release that supermassive black holes are at the center of galaxies and have masses of millions or even billions of times greater than those of the Sun.
Although they prevail in the modern Universe, it is not clear when they were first formed, nor how many existed in the Primitive cosmos.
They can not be observed directly, but when in a supermassive black hole drops a lot of matter, it releases energy in the form of bright light, which can be seen from the whole Universe; This phenomenon is known as quasar.
Precisely, the team of astronomers led by Yoshiki Matsuoka, from the University of Ehime, Japan, used the Subaru telescope to search the far universe for quasars.
The most distant quasar discovered by the team is 13,050 million light-years away, a distance that makes it 'tie' with the second most distant black hole ever discovered.
"The quasars we discovered will be an interesting topic for future follow-up observations with current and future facilities," Matsuoka said.
In addition, he said, they serve to learn about the formation and early evolution of supermassive black holes, comparing measured numerical density and luminosity with predictions of theoretical models. EFE