It's the perfect science fiction device: a hurricane of dark matter. Recent real research has shown that our Sun is…
It’s the perfect science fiction device: a hurricane of dark matter. Recent real research has shown that our Sun is currently immersed in a so-called Stellar stream.
Some publications have captured this unfortunate perception, and report that the earth is about to be walloped by a dark matter storm – but in fact, if it exists, we are already in the storm. The reality of the situation is not really awful, but it is interesting anyway.
Stellar currents are populations of related stars that once could have been bits of a dwarf axle or a global divide, but have now been demolished by the gravitational forces and pass through parts of our galaxy.
Since astronomers are quite certain that things called dark matter serve as the gravitational position for dwarf galaxies, a starstream would probably also contain a certain percentage of dark matter. Perhaps a dark matter experiment can detect particles of dark matter from the newly discovered stream that passes through our cosmic neighborhood.
“It’s going to be a current we’re in,” said Ciaran Hare, Postdoctoral Researcher at the Department of Theoretical Physics at Zaragoza University, Gizmodo . “It immediately made me think of the consequences for dark matter.”
The most successful models to describe the universe are based on experiments that show that the cosmos consists of 4 percent common matter, perhaps 70 percent “dark energy” driving the universe apart, and the rest, about 25 percent, “dark matter”. Scientists have reason to believe that dark matter consists of particles, just as all we can see is of particles and that it is the scaffold for the universe’s large-scale structure. But this dark matter has only been observed based on its gravity effects.
Scientists are in the midst of the pursuit of a dark matter particle. Meanwhile, surveys such as the European Space Agency’s Gaia telescope and the Sloan Digital Sky Survey have created huge maps of the sky, complete with positions, speed and other data points for our region in Winter Street. The data revealed “essential structures”, like this current and the accompanying dark matter hurricane, called S1
, which turns on the Solar System head-on.
Perhaps this dark matter hurricane can be detected by today’s existing dark matter experiments and would have a distinctive signal from Wintergatan’s background darkness. It would go much faster – a “hurricane” compared to the background dark matter “wind,” according to the paper published last week in Physical Review D . The researchers then analyzed if they could detect the current with future dark material detectors.
If dark matter consisted of a “weak interactive massive particle” or WIMP, a particle with a mass similar to the other particles, but to switch weakly (imagine a light breeze interacting with a skyscraper) when the hurricane would only can be detected if the particles had a specific mass range, according to the paper.
Experiments like the XENON NT detector in Italy could not choose the direction of a potential dark particle particle, “explained Laura Baudis, physics professor at the University of Zurich, who was not involved in the new paper. Doing so would take a much larger detector, considering the types of WIMP that have already been ruled out.
And if dark matter instead consists of much lighter particles called axions, the effects of hurricanes may be more noticeable, according to the paper calculations.
“I think it’s a pretty interesting idea,” Sownak Bose, postdoctor at Harvard-Smithsonian Center for Astrophysics, told Gizmodo . “All these experiments trying to detect dark matter have the potential to get their signals amplified by this extra flow.”
Bose pointed out that the amount of dark matter in the current may vary depending on the specific dwarf axis that created the stream -If the dark matter is somewhat more exotic than the theoretical WIMP and axions. But he was excited about what the incredible amount of Gaia data could do for studies of these streams.
So, if there is a dark matter hurricane, we are literally inside it right now. But we are safe (from the dark matter, at least). This so-called storm is most exciting for its scientific prospects. Said Hare: “We know so little about dark matter that some kind of better knowledge of its structure allows us to understand it.”