The active galaxy nucleus is formed by the enormous center of the galaxyBlack holeIt swallows large amounts of interstellar matter, producing large amounts of energy and transferring a portion of the surrounding mass.PlasmaThe body is expelled at high speeds along with the speed of light. The expelled plasma gradually expands and covers a large area of the surrounding universe.
The plasma taken this time exploded from the massive center of the Centaurus galaxy.Black hole. Centaurus A galaxy is the closest active galaxy core to Earth, about 12 million light-years away. It is also the fifth brightest galaxy in the night sky, due to the large amount of energy produced by the central black hole.
When viewed from Earth, the Centaur A’s plasma jet appears at 8 degrees across the night sky, which is equivalent to 16 degrees.Full moonSize.
The new observations were made using the Murchison Widefield Array (MWA) telescope in Australia.
Dr. from the International Center for Radio Astronomy (ICRAR) and the Curtin University (Curtin University) Node. Dr. Benjamin McKinley, the lead author of the paper, reveals the amazing new details of nuclear radioactivity from active galaxies.
“Radio radiation comes from matter that is drawn into a supermassive black hole in the center of the galaxy.” He said in a statement. The jet, which pushes most objects back into space, may be more than a million light-years away. far.
“Previous radio observations could not handle the extreme brightness of the jets, and the details of the large area around the galaxy were distorted, but our new image overcomes these limitations.” McKinley added, “We can learn a lot from Centauri’s because it’s so close to us and we can see the details of it. We understand the physical properties of huge black holes. “
He is an astronomer at the National Institute of Astrophysics in Italy. Massimo Gaspari said the study confirmed a new theory called “chotic cold accretion.”
Gaspari said: “In this model, a cloud of cold gas condenses in the galaxy’s halo, and then rains in the center to energize the vast black hole.”
“Under the influence of this rain, the black hole emits energy back through radio jets, which expand the beautiful petals we see on radio images and thus produce a strong response. This research is the first of its kind in the world. Gaspari concluded.
The galaxies appear to be brighter at the center, where they are more active and more energetic. McKinley pointed out.
“Then when you go out it gets darker, because the energy is lost, it’s gaining stability,” McKinley said, “but it has some interesting features. The charged particles accelerate again and interact with the strong magnetic field.”
Professor Steven Tinge, director of the MWA, said the research was made possible by the telescope’s wide vision, excellent radio silent position and excellent sensitivity.
“MWA is a pre-project of the Square Kilometer Array (SKA). SKA is a global initiative to build the world’s largest radio telescopes in Western Australia and South Africa,” Ting said. Large amounts of data mean that the potential for each MWA monitor is very high. This is an amazing step towards achieving a great SKA.
The paper for this research was published in the December 22 issue of “Natural Astronomy”.
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