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Astronomers discovered rare, new species of expanse on the brink of death



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The brink of death is very dusty for a cold quasar.


Michelle Vigeant

The astrophysicists at the University of Kansas have seen a massive extraordinary expanse of the universe for the first time, changing our perception of how the galaxies died. At the 234th American Astronomical Society meeting last Thursday, Allison Kirkpatrick showed his discovery of "cold quasars", incredible bright, dying galaxies in the farthest space of the cosmos.

The quasars are usually mammoths that are huge black holes surrounded by large amounts of gas and dust, making them very bright ̵

1; brighter than a standard galaxy. They were created when two galaxies were included and their black holes collided. For example, our galaxy, the Milky Way, is in the course of collision in the nearby Andromeda expanse. This event, which will take billions of years from now, will signal the end of two galaxies and the creation of a quasar.

In the future, gas and dust will begin to fall into the center of the quasar and the spaces in space. Astronomers thought this point was the end of the life of a space, when it lost its ability to form new stars and became "absolutely", but Kirkpatrick and his team discovered that a small part of the cold quasar is still forming new stars.

Researchers examine the sky with X-rays and infrared telescopes and found 22 thousand at a distance of 6 to 12 billion light years away showing unusual signatures. They seem to be at the end of their lives when they are optically viewed, however, they are still displaying a bright, far infrared signature with many dust and cold gases in them.

In the press conference, Kirkpatrick declared whether to zoom in and see one of these quasars, becoming like a donut. In the center of the galaxy we see a dead zone, where the quasar is blown away by almost all gas and dust. In the vicinity, we saw a star-forming region still abundant in gas and dust.

"These galaxies are rare because they are in phase transition," Kirkpatrick says in the statement. "We got them before the formation of the star in the universe has been quenched, and this transition period should be short."

Incredible strong air moves through space, so this time will last only around 10 million years – a blink of an eye on the timeline of the universe. Thus, these cold quasars are less rare, and the discovery of one is an important step in exercising how mortal, mature, and lifelong deaths are.

Is this the final destiny of our own space? Kirkpatrick thinks. However, that is 3 to 4 billion years away and we will have other problems at that time, such as an expanding day that is ready to swallow the whole world.


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