A team of international astronomers was hunting for ancient, massive black holes – and they hit the motherlode, which discovered 83 unrecognized quasars.
The universe is full of massive black holes, a massive version of humble, everyday black holes, containing millions of masses or billions of times in our day. These huge cosmic beasts have had a huge impact on gravitational, so you often see huge black black holes hiding in the center of the galaxies, orbited by billions of stars. That's exactly what's happening in our galaxy in the Milky Way home.
To see them hidden in distant parts of the universe, you need to study the light of the gases that surround them. Since we can not see a black hole, but we can see the light, we design powerful light sources as "Quasar". Under the eyepiece of a telescope it may seem that the stars are much better ̵
The Japanese team became the ultra-powerful "Hyper Suprime-Cam", mounted on the Subaru Telescope in Hawaii, towards the darkest corners of the cosmos, checking the sky for five years. By studying the snapshots, they have acquired potential quasar candidates out of the dark. Interestingly, their way of discovering populations of huge black holes similar to the dimensions we see in the universe today, has given us a window to their origins.
After identifying 83 potential candidates, the team used a suite of international telescopes to confirm their findings. The quasars they cut are from the very first part of the universe, about 13 billion light years away. Practically, this means that researchers are looking at the past, on things that make up less than a billion years after the Big Bang.
"It is noteworthy that such a very dense thing was transformed soon after the Big Bang," said Michael Strauss, co-authored by the paper, in a statement.
Scientists do not know how black holes formed in the early universe, to identify them now provide new ways of exploring. Interestingly, researchers have discovered a quasar with lesser light than they expected. The characteristics of the particular quasar, HSC J124353.93 + 010038.5, were reported in The Astrophysical Journal Letters in February.
"The quasars we have discovered will be an interesting subject for further follow-up observations on current and future facilities," said Yoshiki Matsuoka, ahead of research, in a statement.