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Dark matter hurricane | Astronomy.com

There is a "dark matter hurricane" that blows through our heart of the Milky Way galaxy. Just this second passes…

There is a “dark matter hurricane” that blows through our heart of the Milky Way galaxy. Just this second passes it over the earth. And this fast stream could reveal important details about dark matter, finding a new study.

The dark matter travels in the so-called S1 stream. Scientists believe that streams like this are the cosmic crackers when little galaxies are gone too close to Winter Street. Our gravity tears the smaller galaxy apart, behind a traveling elliptic stream of stars, dark matter and other debris.

Dark matter hurricane

Dark matter is a painful material that scientists believe if the standard model is correct, exists in large quantities throughout the space. Scientists still do not know what dark matter really is &#821

1; there are a number of leading theories, but no one knows for sure. But the S1 current is expected to blow dark matter past us at about 310 miles per second (500 km / s) right now and it can provide an opportunity to detect.

Galactic currents

Dozens of currents have been found in Vintergatan. And like the galaxies from which they are removed, these streams are typically made of stars and dark matter that all travel together at the same speed. “There are a lot of these streams over the galaxy, some of them are really huge and you can see them in the sky,” says Ciaran Hear at the University of Zaragoza, Spain.

The European Space Agency billionaire survey with Gaia spacecraft reaches far into our galaxy to detect and observe stars. And Gaia picked out the S1 stream because its approximately 30,000 stars have a different chemical composition than those native to our galaxy. And they travel along a similar elliptical road.

And while over 30 such streams are known in our galaxy, S1 still surprised astronomers because our solar system is really in this stream. And our roads will cross for millions of years. Now it will not affect our life or planet in any physical way – there is still only one star (the sun) in our solar system.

But O & # 39; Hare and his colleagues calculate the S1 current in our part of the galaxy and predicted possible signatures of the dark matter, which could help inform and support efforts to locate and study the contagious substance.

“What we want to do is add the stream as part of our kind of prediction for types of signals that will appear in a dark matter experiment,” says Hare. According to a statement, current detectors looking for weakly interacting massive particles (WIMPs) (a popular idea of ​​what dark matter may be) probably not seeing anything from S1, but future technologies can.

Their study was published in Journal Physical Review D.

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