Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory, Gemini South, and Gemini North. The observations that led to this discovery were made using a variety of telescopes, including three National Science Foundation NOIRLab facilities - the Víctor M. Feige Wang, NASA Hubble fellow at the University of Arizona and lead author of the research paper, explains: “ Black holes created by the very first massive stars could not have grown this large in only a few hundred million years.” The presence of such a massive black hole so early in the Universe’s history challenges theories of black hole formation as astronomers need to explain how it came into existence when it barely had the time to do so. The source of this quasar’s power is a supermassive black hole 1.6 billion times as massive as the Sun - the earliest black hole currently known to exist in the Universe. The new quasar is more than ten trillion times as luminous as our Sun - meaning that it pours out one thousand times more energy than the entire Milky Way Galaxy. As the most distant quasar known, it is also the earliest, being fully formed only about 670 million years after the Big Bang. J0313-1806 is seen more than 13 billion years ago. “ The most distant quasars are crucial for understanding how the earliest black holes formed and for understanding cosmic reionization - the last major phase transition of our Universe,” said Xiaohui Fan, study co-author and Regents Professor of Astronomy at the University of Arizona. Today, an international team of astronomers has announced the discovery of J0313-1806, the most distant quasar known to date. The amount of electromagnetic radiation emitted by quasars is enormous, with the most massive examples easily outshining entire galaxies. They occur when gas in the superheated accretion disk around a supermassive black hole is inexorably drawn inwards, shedding energy across the electromagnetic spectrum. Quasars, which are powered by the feeding frenzies of colossal supermassive black holes, are the most energetic objects in the Universe. The result was released today at the January 2021 meeting of the American Astronomical Society. Seen more than 13 billion years ago, this fully formed distant quasar is also the earliest yet discovered, providing astronomers with insight into the formation of massive galaxies in the early Universe. It is powered by the earliest known supermassive black hole, which weighs in at more than 1.6 billion times the mass of the Sun. The quasar, observed just 670 million years after the Big Bang, is 1000 times more luminous than the Milky Way. The most distant quasar known has been discovered.
0 Comments
Leave a Reply. |