The gas bubble spinning around the supermassive black hole in our galaxy reveals its secrets

The gas bubble spinning around the supermassive black hole in our galaxy reveals its secrets

While the Event Horizon telescope collected data for its new wonderful image of the supermassive black hole of the Milky Way, the Arrow A*, legion of other telescopes, including the three NASA X-ray Space Observatorys, the astronomers also observed signs of a "hot spot" spinning around the supermassive black hole. It is believed that it is a bubble of very hot gas. Its behavior analysis should help to better understand the dynamic environment of the object.

When the Event Horizon Telescope telescope observed the Arrower A* in April 2017 in order to obtain a new image recently presented, collaborator scientists also scanned a black hole with eight units detecting different light waves.

Thus, they collected X-ray data from the NASA X-ray Observatory, a network of nuclear spectroscopic telescopes at the European Southern Observatory in Chile.

To calibrate the EHT data, Velgus and his colleagues, members of the EHT collaborator, used ALMA data on Shooter A*, recorded at the same time as EHT observations. To the surprise of the team, only in the measurements of ALMA were there much more clues about the nature of the black hole.

Although some supermassive black holes can be extremely active

So the ALMA telescope, during this observation campaign for EHT, accidentally caught a surge or flash of X-ray energy released from the center of the galaxy between 6 and 12 April 2017, and scientists believe that this type of flash, previously observed by X-ray and infrared telescopes, is associated with so-called hot spots.

Velgus, an employee of the Nikolai Copernicus Astronomy Center in Poland and the Harvard University Black Holes Initiative in the United States, says in his statement: "".

Jesse Vos, a graduate student at the University of Rudbouda, who was also involved in this study, suggests that the behavior of these hot spots may be similar to that of a known physical phenomenon: ".

Space gas bubble explains the riddles of black holes.

Black holes

Astronomers have long believed that flashes result from magnetic interactions within the material of this accretion disc, in particular a very hot gas with a magnetic field surrounding the black hole. The new data support this idea.

ALMA allows astronomers to study polarized radio radiation from the Arrower A* that can be used to detect the magnetic field of the black hole. The team used these observations and theoretical models to learn more about the formation of the hot spot and the environment in which it is built, including the magnetic field around the black hole. This study provides much more severe restrictions on the shape of this magnetic field than previous observations, helping astronomers understand the nature of the central black hole in the Milky Way and its surroundings.

Macek Velgus of the Max Planck Institute of Radio Astronomy in Bonn, Germany, who led the study, explains: ""

Indeed, the observations confirm some of the earlier conclusions of the GRAVITY device at the very large ESO telescope, which carries out infrared observations. GRAVITY and ALMA data show that the outbreak was caused by this accumulation of gas that revolves around a black hole clockwise in the sky, with the hot point turning almost the forehead into the forehead.

Ivan Marty-Vidal of Valencia University in Spain, co-author of the study, added: ".

Now the team plans to try to observe orbital gas clusters directly using EHT to study more thoroughly the supermassive black hole and determine its dynamic characteristics so that it can predict its evolution. Welgus concludes: "".