The artificial intelligence found the fastest stars in the Galaxy

© Eatec the artist presented himself a star escaping from the milky WayThe artificial intelligence found the fastest stars in the Galaxy© ESA

European probe»Stargazer» GAIA and artificial intelligence has enabled researchers to access the fastest stars of the galaxy and found six bodies, which will soon leave the milky Way, according to a paper published in the journal MNRAS.

«These super-fast stars are very important to study the structure of the milky Way. Many of them flew long distances, but their homeland is the core of the galaxy, the super-dense region of matter, hidden from our sight by the dark clouds of interstellar gas and dust. Therefore, these stars are very important for studying the gravitational field of the Galaxy,» — says Elena Rossi (Elena Rossi) from Leiden University (the Netherlands).

Hyperspeed stars were first discovered in the early 2000-ies — their speed relative to the center of the Galaxy was 500 kilometers per second, and this speed was more than enough to «disengage» from the gravity of the milky Way and escape into intergalactic space. Two years ago, scientists discovered a star US 708 — the fastest for today the «normal» star that is moving at a speed of 1,200 kilometers per second.

Astronomers believe that the stars are accelerated to speeds due to the gravitational interaction with the supermassive black hole at the galactic center or after one of the components of the binary system explodes in a supernova. Today scientists believe, a large part of the hyperspeed of stars are born as a result of interaction with a black hole, and this gives reason to believe that the study of orbits hyperspeed stars will allow to judge about the properties of black holes and even dark matter.

One of the tasks of GAIA probe, derived in space in December 2013, is the search for such stars, the study of whose properties and motion trajectories could help scientists understand how the nuclei of galaxies and how black hole Sgr A* «catapultae» like stars beyond the milky Way.

As Rossi says, this task proved more difficult than originally thought, scientists – GAIA is watching a gigantic amount of light, and a «manual» learning of each of them would require astronomers to spend on the search for such stars-«fugitives,» all my life.

Therefore, their search of European astronomers has developed a special artificial intelligence system, which automatically analyzes pictures of stars, their velocity, and recovers the trajectories of their flight in the last few million years.

In total the program was able to find six such luminaries in data speeds of almost two million stars, which was followed by GAIA during the first phase of its work. The speed of all these objects, as they say scientists, is relatively modest – only one of them is moving faster than 500 kilometers per second, and other lights, with a speed of about 400 kilometers per second.

This discovery increased the number known to us hyperspeed world almost twice and has allowed astronomers to discover one common pattern – they are relatively small stars, whose mass exceeds the sun more than 4-5 times. This feature of these stars-«fugitives,» as astronomers hope, will help us to understand how they escape from the center of the galaxy and how many suns there are.

Source

Be the first to comment on "The artificial intelligence found the fastest stars in the Galaxy"

Leave a comment

Your email address will not be published.


*