What is the mass of the Milky Way - 1BiTv.com

What is the mass of the Milky Way

The mass of the Milky Way is measured.

What is the mass of the Milky Way

An international team of researchers used complex models and managed to calculate the mass of the Milky Way, which, taking into account the invisible dark matter, turned out to be 890 billion times the mass of our Sun.

The author's article is published on the arXiv preprint server. Previous studies have overestimated the size of the Milky Way. According to new data, across the size of our galaxy is approximately 256 thousand light years.
Based on this indicator, the authors of a new study re-measured the mass of the Milky Way. According to their calculations, it is 890 billion times the mass of the Sun and 296 quadrillion times the mass of the Earth.

To carry out the calculations, the researchers used a model specially created by them. She took into account data from several sources, including information on the motion of stars, gas and other substances in our galaxy.

In addition, the group corrected for a coefficient that takes into account the influence of the so-called “rotation curve”. Since our galaxy does not rotate uniformly, researchers had to “come up” with such a curve - it helped to estimate the distances to galactic objects.

In their study, the authors write that the forces of rotation can be balanced by gravitational forces. This balance keeps objects from being drawn into a black hole located in the center of the galaxy, or from being thrown into space. This balance was used to calculate the mass of objects.

Researchers also took into account dark matter. Previous studies have shown that its mass is approximately 93 percent of the total mass of the Milky Way. With this in mind, results were obtained that are consistent with the results of other researchers.

Source: Russian newspaper

16.12.2019 11:37:56
(Automatic translation)

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