Monday , May 16 2022

The brightest galaxy of the universe has a very dark secret



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And what is the secret of such glory? Astronomers are not yet fully guaranteed, but are probably associated with the latest discovery.

Observations derived from the ALMA field of the telescope (Atacama Large Millimeter / Submillimeter Arrai) enabled it to determine that V2246-0526 gently absorbs matter from at least three adjacent galaxies – this material is fed by a supermassive black hole.

Astronomers have noticed the material tributaries coming from neighboring galaxies to V2246-0526. It is important to note that even in these taps, the amount of matter is the same as in galactic communications.

NASA Photo / end-to-end cannibalism: Galaki V2246-0526 in the center is fed to its neighbors C1, C2 and C3

NASA Photo / end-to-end cannibalism: Galaki V2246-0526 in the center is fed to its neighbors C1, C2 and C3

"From previous observations, we know that V2246-0526 has three satellite galaxies, but we have not had any evidence of any interactions between the nucleus of the core and the neighbor. We did not look for signs of cannibal behavior, but we did not really expect this, but this observation of the ALMA telescope clearly shows "said astronomer Tanio Dias-Santos, who represents the University of Diegu Portales (Chile).

The V2246-0526 galaxy is 12.4 billion of us. light years. Its center is a quasar – an unusual light and active nucleus of the galaxy, supported by the active supply of black holes.

Quasars are among the most prominent objects in the universe: they point to visible light and a radio spectrum. The rays are propagated from the material surrounding the black hole (the so-called acrylic disk).

This disc is rich in gas and dust, spinning at incredible speeds – just as the water revolves before it goes into the hole in the bathroom. Due to this rotation due to the large gravity force of the black hole, strong friction is created. And this in turn brings in unthinkable amounts of light.

In the case of V2246-0526, this whole light is absorbed by clouds of dust around the acrylic disk, which are later suppressed by infrared light already in the infrared spectrum – why this quasar is classified as a rare type, also known as the hot galaxy blurred by the dust of the Hot DOG) – Only 1 in 3,000 quasars are present.

All the matter that enters the galaxy does not necessarily have to be cut off immediately into the black hole. Although this central facility is truly enormous (about 4 billion times heavier than the Sun), its path is also unlimited.

Therefore, a part of the materials of neighboring galaxies simply become part of the central galaxy – later this material will be used to form new stars. But that's not all easy and simple.

The black hole effect is so powerful that it moves gases across the galaxy. The momentum and the energy that generates photons is so powerful that the gas goes further from the center – in the end, the entire galaxy can be scattered to pieces.

Well, in general, the V2246-0526 galaxy is very atypical. It has already been established that the light show and the turbulent mass movement never stop. Recent data also show that this galaxy is immediately involved in the cannibalism of several adjacent galaxies. And this is also the furthest galaxy observed by scientists, whose scientists could directly deal with cannibalism.

But that's not all. There are still mysteries of V2246-0526 that are of great interest to scientists. For example, the supermassive black hole in the galactic center is true, but in fact it should be much larger. The mass of the black hole determines the upper limit of the light of the entire active galaxy core, but the core is even three times lighter than it should be with a black hole of this size.

Why? Scientists still do not know. But no doubt, they will want to find out. And the weather is definitely there.

"It is likely that such a meal for the neighbors is already going on for a long time and we hope that this intergalactic rush will last at least several hundred million years," T. said. Diaz-Santos

The findings of this study are available on this page.

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