(NLDO) - From the space-time region just 900 million years after the birth of the universe, a pair of objects has achieved an almost unbelievable state.
According to SciTech Daily, a multinational research team, led by the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU - Japan), has discovered a pair of terrifying "time-traveling" objects from the early universe thanks to the Subaru and Gemini North telescopes located in Hawaii (USA).
They are two quasars, black holes disguised as bright objects in the sky. That light comes from their ravenous gobbling of matter.
More importantly, they come from a period called the "Cosmic Dawn" - 1 billion years after the Big Bang 13.8 billion years ago.
Graphic depicting a pair of "monster" objects on the verge of merging - Photo: GEMINI OBSERVATORY/NOIRLab
In the "time-traveling" image collected by the two telescopes, the pair of objects existed in space about 900 million years after the Big Bang and had reached a gigantic size.
The light from them is so powerful that it travels billions of light years to reach telescopes on Earth, which of course also takes billions of years, and gives us a complete view of a moment in the cosmic past.
The pair of quasars in the "time-traveling" image recorded by telescopes - Photo: NOIRLab
With their age, the quasar pair provides a glimpse into the reionization period of the universe, which occurred 400 million to 1 billion years after the Big Bang.
During that time, something, probably a combination of sources, released enough radiation to strip electrons from most hydrogen atoms, completely changing the nature of the universe.
Scientists suspect that the powerful radiation comes largely from quasars.
The collision and merger of two galaxies could provide material for supermassive black holes, triggering quasar activity.
So at a time when intense radiation was heating the entire universe, you would expect to see many twin quasars.
Yet, despite the fact that humanity has found 300 quasars from this reionization epoch, each one is alone.
So the newly recorded pair of monstrous objects is the first quasar pair to help prove the long-standing theory.
This pair of quasars is also the central black hole of two galaxies that are in the process of merging - an important process in the evolution of the universe.
This discovery thus sheds further light on the role of galaxy mergers and black hole activity during the Cosmic Dawn.
Source: https://nld.com.vn/bat-duoc-cap-vat-the-kinh-di-xuyen-khong-tu-13-ti-nam-truoc-196240822110045761.htm
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