What do black holes eat? Ancient black holes may “feed” on gas and dust

BEIJING, Dec 23 (Xinhua) — Ancient black holes may have evolved into supermassive objects today, 12.5 billion years ago, “forthed” by gas and dust, a new study suggests. A team of international researchers used a very large telescope in Chile to capture images of “black hole food” around the quasar at the center of the galaxy.

 12.5 billion years ago, ancient black holes may have eaten from gas and dust into supermassive objects today. This image depicts the halo around a quasar in the early universe

The researchers say these materials allow these black holes to grow rapidly when the universe is still young. They say the discovery provides the basis for understanding how the earliest cosmic structures, such as galaxy clusters and voids, formed. In astronomy, voids are spaces between fibrous structures that, together with fibrous structures, form the largest scale structures in the universe.

Dr Emmanuele Paolo Farina, of the Max Planck Institute for Astronomy in Germany, said: “The existence of these ‘monsters’ in the early universe was a mystery. “The “monster” here is a supermassive black hole that is billions of times the mass of the sun. Until now, it was thought that there was not enough material around supermassive black holes to support their growth.

A team of international researchers has captured images of “black hole food” around the quasar at the center of the galaxy using a very large telescope in Chile. This image shows a gas halo newly observed by the multi-cell spectroscopic probe on the European Southern Observatory’s Very Large Telescope, superimposed on old images of galaxies merged with another telescope

Dr Farina said they may have been formed by the collapse of the earliest stars and must have grown very fast. Astronomers have yet to find enough “black hole food” (including cold gas and dust) to explain this rapid growth. “Now we show for the first time that primitive galaxies do have enough food to sustain the growing black holes and to form vibrant stars. “

Astronomers used the European Southern Observatory’s Very Large Telescope, including its multi-cell spectral detector (MUSE), to collect data on black holes.

The researchers looked at 31 quasars, the very bright, active galactic nuclei in the galaxy.

Astronomers have found that 12 of these quasars are surrounded by low-temperature, high-density hydrogen. According to the researchers, these gas halos are closely linked to galaxies, providing the “perfect food source” for sustaining the growth of supermassive black holes.

Dr Farina said multicell spectral detectors were “game-changers” in quasar research, making the study possible. “In the hours of observations of each target, we were able to drill down into the largest and most greedy black holes that existed in the young universe,” he said. Multicell spectroscopic detectors were able to detect faint hydrogen glows in the halo, eventually leading astronomers to discover a food bank in the early universe that provided energy for supermassive black holes. “

The next generation of very large telescopes will be launched in 2025, when scientists will be able to reveal more details about galaxies and supermassive black holes. “With the power of very large telescopes, we will be able to explore the early universe more deeply and find more of these gas nebulae,” Dr. Farina said. The results of this study were published recently in the Astrophysical Journal.

Supermassive Black Hole Man-Horse A

At the center of the Milky Way galaxy is a supermassive black hole called Sagittarius A, or Sgr A. Supermassive black holes are highly dense regions at the center of galaxies, and their masses are billions of times the mass of the sun. They act as powerful sources of gravity, absorbing dust and gas around them.

American physicist Karl Jansky first presented evidence of black holes at the center of the Milky Way in 1931, when he discovered radio waves from the region.

The energy of the Constellation A is powerful, but invisible, and its mass is equivalent to about 4 million suns. This supermassive black hole, just 26,000 light-years from Earth, is one of the few black holes in the universe where we can detect the flow of matter near it. Less than 1% of the material that was initially affected by the gravitational pull of a black hole reaches the event horizon because most of it is thrown. As a result, X-ray emissionfrom from matter near the Constellation a. The captured material needs to lose heat and angular momentum to enter the black hole, and the injection of matter allows this loss to occur. (Any day)

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