Do Not Fear the Dark Matter Hurricane (The Dark Matter Hurricane Is Good)
Do Not Fear the Dark Matter Hurricane (The Dark Matter Hurricane Is Good)
Scientists believe that there is a "dark matter hurricane" in the direction of Earth. In fact, it might even be blowing through us.
But do not worry, it's definitely not going to kill you. Above all, it's just a bunch of normal dark matter with an especially good mark. And it really addresses (more or less) in this way.
This is what is happening: in 2017, astronomers seen a line of stretched stars that passes through the general region of our Milky Way Solar System. Scientists called this group the "S1 flux", identifying it as the closest of several stellar fluxes that move through the galaxy. Parades of stars like these are formed when the Milky Way swallows a dwarf galaxy, extending the smallest object in the process. In a new article, Published on November 7 in the journal Physical Review D., the researchers argued that S1 could carry with it a large amount of dark matter from the original dwarf galaxy. And they gave that luggage the elegant name of "dark matter hurricane."
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Once again, that hurricane is not going to kill you. Or blow the door of your house. But that could cause some local peaks in dark matter, which would help researchers looking for dark matter to find things, the researchers wrote.
That's because all galaxies, but especially dwarf galaxies, are linked by dark matter, physicists believe. Therefore, the galaxy that broke into pieces at birth S1 probably threw a lot of dark matter in the path of the current.
The problem is that there are no dark matter detection devices. they have really worked, partly because they are all designed on the basis of educated assumptions about what dark matter really is. (Scientists have very good reason believe that dark matter exists but you are still guessing about its composition.)
Then, the physicists behind the recent article calculated how dense the dark matter of S1 should be to influence the signals in several dark matter detectors that will be built soon. When those detectors connect, scientists will know much more about the "hurricane" and if it is really going through our star neighborhood.
Until then, it's fun to think about it, is not it? A dense cloud of dark matter from a dead galaxy exploding invisibly through us as it follows the remaining stars in its doomed parade.
Whoooooooooooooooooooooooooooooooooooooooooooooosh!
Originally published in Living science.
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