by the European Southern Observatory
there is earthmilky way galaxyThe supermassive black hole in the middleSagittarius A*A mass of high-temperature gas was discovered rotating at an astonishing 30% of the speed of light. This is a mass of gasMercuryIt is said to rotate a similar distance to the orbit around the sun in only about 70 minutes.
Orbital motion near Sagittarius A* – Constraints on polarimetric ALMA observations | Astronomy and Astrophysics (A&A)
https://doi.org/10.1051/0004-6361/202244493
Astronomers detect bubble of hot gas swirling around Milky Way’s supermassive black hole | ESO
https://www.eso.org/public/news/eso2212/
Strange Blob of Hot Gas Blows Around Sagittarius A* With ‘Mind-Blowing Speed’ : ScienceAlert
https://www.sciencealert.com/a-weird-blob-of-hot-gas-is-whizzing-around-sagittarius-a-with-mind-blowing-velocity
A very hot plume of gas discovered orbiting the Milky Way’s black hole at ‘mind blowing’ speeds | Living Science
https://www.livescience.com/superfast-hot-blob-gas-sagittarius-a
Sagittarius A* is located at the center of the Milky Way galaxy and is a black hole with a mass four million times that of the Sun. In May 2022, a project to build a virtual telescope by connecting eight radio telescopes installed around the world.Event Horizon Telescope (EHT)” announced that the image of Sagittarius A* had been removed and became a hot topic.
A black hole that exists in the same galaxy as earth has been imaged for the first time – GIGAZINE
A research team led by Maciek Wielgus, an astrophysicist at the Max Planck Institute for Radio Astronomy, who participated in the Sagittarius A* EHT imaging project, is in Chile.Atacama Large Millimeter and Submillimeter Interferor (ALMA)We analyzed observational data Then, in the observational data in April 2017, an abnormal brightness (ankle) emitted from the vicinity of Sagittarius A * was detected.
This type of flare in Sagittarius A* has been observed by X-ray and infrared telescopes in the past, and is thought to be associated with a mass of gas (hotspot) orbiting the black hole at high speed . This is the first time that the existence of a flare has been confirmed not by X-rays or infrared rays but by radio observations.
When the research team analyzed the mass of gas released by the flare, it became clear that it orbited a black hole similar in size to Mercury’s orbit around the sun in just 70 minutes. “We think we see a hot bubble of gas orbiting Sagittarius A* in an orbit similar in size to Mercury,” said Wielgus.
Also, the clusters of gas emitted strongly polarized or spiral light,synchrotron radiationsigns were also confirmed. These occur under conditions of strong magnetic fields, and mounds of gas swirl around the black hole to supply matter.magnetically arrested discis suggested to be an integral part of
Normally, objects too close to a supermassive black hole are pulled by the overwhelming gravity, but the clumps of gas found this time are moving so fast that they maintain a stable orbit near the black hole, it is said that there is. However, it has also been suggested that the flares could be observed by radio telescopes because the gas mass has lost energy and cooled, making it possible to observe it at longer wavelengths. It appears that it could be drawn into black hole
“We find strong evidence for the magnetic origin of these flares, and observations provide clues about the geometry of the process,” said study co-author Monika Mościbrodzka, an astrophysicist at Radboud University in the Netherlands. I was able to get it,” he observed. “I hope one day I’ll feel comfortable saying ‘I know’ what’s going on in Sagittarius A*,” Wielgus said.
by the European Southern Observatory
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