The impact of dazzling large quality black holes on the surrounding environment has not met people’s expectations
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The impact of dazzling large quality black holes on the surrounding environment has not met people’s expectations

The research team, including the lecturer of Aberley family astronomy and celestial physics, and W. Niel Brandt, a professor of physics at the University of Pennsylvania, published an introduction at the “Monthly Notices of the Royal ASTRONOMORONOMINOMOLAL SOCIETY”.The dissertations of these achievements.

This study used data from the National Aeronautics and Space Agency Qian Dila X-Ray Observator (NASA’s CHANDRA X-Ray ObserVatory) to study a star-like body closest to the earth.This star is known as H1821+643, about 3.4 billion light years from the earth, and is located in a galaxy group.Star -like body is a rare and extremely large quality black hole. They pull the substances crazyly pulling inward, produce strong radiation, and sometimes produce strong injection.

Brandt said: “I always want to use Chandra’s keen vision to better study this extraordinary star. I suspect that the” screaming “of this star body is more terrible than its” chewing sound “Its impressive firework performance does not mean that it also has the same profound impact on the environment. I am very happy that our firm determination has finally been rewarded and confirmed my guess! “

Quasar-H1821-643.jpg

The center of this picture is the star -like body H1821+643. This is a large -scale large -quality black hole that is growing rapidly. Astronomers have found that although it produces strong radiation, it can be seen from the very large array of radio data (red).Stream, but its performance is not satisfactory.H1821+643 is located in the center of a galaxy group, surrounded by a large amount of hot gases. Blue is a Chandra telescope detected by X -ray.The high temperature and high density of the hot air around the star body show that the impact of this black hole on its host galaxy is weaker than many similar black holes in other galaxies.H1821+643 is the closest star -like star in the galaxy group.It is 3.4 billion light years from the earth, and the image width of the image is about 1 million light years in the distance of the stars.Image source: X -ray NASA/CXC/Univ. Of nottingham/h.russell et al: NSF/NRAO/VLA; Image processing: NASA/CXC/SAO/N.Wolk

Most of the growth of large -scale black holes in the growth of large -mass black holes is not as fast as stars.Astronomers have studied the impact of these more common black holes by observing the black holes in the center of the galaxy group.The regular outbreak of such black holes will prevent them from cooling down a large amount of overheated gas contained in them, thereby limiting the number of stars in the host galaxy, and how many fuels are transported into the black hole.As for how much the star -like body in the galaxy group has on its surrounding environment, we know very little.

Helen Russell, the University of Nottingham, who led this new study, said: “We found that the stars in our research seem to have abandoned most of the control of the slow-growing black holes.It is not matched with its influence. “”

In order to draw this conclusion, the research team studied the high -temperature gas shrouded in H1821+643 and its host galaxy.However, because the X -like X -rays are very bright, it is difficult to study the weaker X -rays from thermal gas.

Paul Nursen, the co-author of the Harvard University Celestial Physics Center and the Smithsoni Society, said: “We must carefully remove X-ray glare to reveal the impact of the black hole. Then we can see that it actually has a surrounding area.The impact of the environment is small. “

Gas dynamics and impact on the future

The research team found that the gas density near the black hole in the center of the galaxy is much higher than the gas density in the distant area and the gas temperature is much lower.Scientists predict that when there is almost no energy source (usually the energy erupted by black holes) to prevent high temperature gas from cooling and flowing to the center of the galaxy group, the high -temperature gas will have such a performance.

“Compared with most other black holes in the center of the galaxy group, this giant black hole has produced much less in calories,” said Lucy Chrys, an open university in the United Kingdom, “This allows high-temperature gases to cool down quickly.Formed a new star, and it also became the source of fuel for black holes. “

Researchers have determined that the heat gas, which is equivalent to about 3,000 times the mass of the solar every year, is cooling, so that it is no longer visible in X -rays.This fast cooling can easily provide sufficient substances for the formation of 120 new stars observed in the host galaxy each year, and can also provide sufficient substances for the 40 sung -quality stars consumed by the black hole each year.

The research team also studied the possibility of direct radiation of the star -like body to cool the high temperature gas cooling of the star group.This involves the collision with electrons in high -temperature gases from the star -like body, which causes the photon energy to increase, and the electrons lose energy and cool down.Research teams have shown that this cooling is likely to occur in the star group containing H1821+643, but this cooling is too weak to explain a large amount of gas cooling you see.

Tomas Braben, who co-owned, said: “Although this black hole may not perform well because this black hole may not last forever, the current state is likely not to continue. In the end, the Black CaveThe fast fuel intake should increase the power of its injection and strongly heating the gas. At that time, the growth rate of black holes and galaxies should slow down. “