Scientists for the first time in history managed to take a picture of a black hole in the center of the Milky Way

Альфа Стрельца

The international project Event Horizon Telescope (EHT) announced a revolutionary breakthrough – after five years of hard work, scientists were able to image the object Alpha Sagittarius – a huge black hole that is located exactly in the center of our galaxy. The existence of an object with a powerful gravitational field, around which the spiral of the Milky Way rotates, was known before. But it was not possible to see him.

The difficulty in observing Alpha Sagittarius is that at least it is also a black hole from the category of supermassive, but it is not very active by the standards of such objects. As a result, huge clouds of gas and dust surrounding the black hole dimmed the light from its accretion disk. In addition, Sagittarius A is just a crumb against the background of its counterpart M87 , around which gas at near-light speed makes one turnover in a few days, so it is convenient to observe it. And around Sagittarius A*, a similar gas flies at the same speed in a matter of minutes, and this greatly complicates its analysis.

Альфа Стрельца

A project to study the black hole at the center of the Milky Way was launched in 2017, involving teams of eight telescopes in different parts of the Earth. 6 terabytes of data were collected, for the analysis of which new algorithms had to be developed. The images were grouped into four classes to obtain an image of Sagittarius Aat different times of observation. The resulting picture became an average version of the four visible states of the black hole.

Most of all, scientists were struck by how the practical data of observations coincided with Einstein’s predictions about the theory of relativity. And also how similar processes occur near Sagittarius Aand M87*, although the difference in mass between them is three orders of magnitude. This is another excellent proof that outer space was created and operates according to certain laws, and we have yet to discover them.

Source — Event Horizon Telescope

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