An invisible substance permeating the entire universe, and the change of the paths of the stars and the galaxies.
This is the so-called dark matter, which exerts a force of attraction, yet never have to interact with the light. No one knows what it is, and it is almost impossible to detect, until now. However, a new theory was able to finally have a way to test for dark matter. [Of The 11 Greatest Unanswered Questions Of Dark Matter]
The dark matter could be made of a strange, half-magnets, a theoretical physicist from the University of California, Davis, said in a presentation on June 6 at the Planck-2019 at the latest conference, held in Granada, Spain. And with the inclusion of a real powerful (as-of-yet non-existing) scanning electron microscope, we might finally be able to get them in the future.
However, not all scientists are convinced of it.
“I think it’s neat, but it is not very promising,” said Sabine Hossenfelder, a research fellow at the Frankfurt Institute for Advanced Studies, which is not included in the study. “There are an infinite number of particles, you can think of that is dark matter.” This is just one of them, she added.
For each of these units, you can do a lot of calculations, how to publish a paper and think of experiments you can try in order to have the funding for it,” she said. “If you’re really lucky, you will have someone you can experiment — it won’t be anything to find.”
The search for dark matter in the
Although the theories predict dark matter exists, we don’t really have a clue how it looks or what it is. For a while there was “a great story” and that the dark matter was made up of a heavy-handed, shy, nocturnal animal, of a particle is known as a Weakly Interacting Massive icle, or WIMP., said a co-author of the new study, John Terning, professor of physics at the University of California, Davis.
For years, scientists have searched for it very, very slowly, chargeless particles with the aid of powerful particle accelerator. However, as time went on, physicists are ruled out, more and more of WIMP candidates, and the popular idea of a lost of traction. Although it is not completely out of the question, for the last 10 years, people have been thinking about other options, other than for the faint-hearted,” Terning said.
Another theory states that dark matter is actually made up of light particles, or photons.
“In addition to the ordinary photons, which we can see, there are a number of the photons that we will not be able to see it,” Terning said. This is the so-called “dark photons” are hypothetical particles that have mass, but it is lighter than the electron. Dark photons would interact — although rather weak — with the regular system.
In the new study, in a Terning and a post-doctoral researcher Christopher Verhaaren was built on this theory proposes that dark matter could be made out of dark, half-magnets.This is a hypothetical half-magnets are darker versions of the long-searched for monopoles, or a magnet only one pole, that of the physicist Paul Dirac first proposed in the 1930’s. Despite decades of hunting, and none found any evidence of them in nature is what it is.)
Dirac, it is not possible monopoles, although he also suggested that an electron moves around on a parquet floor that would be affected by the magnetic field. So, when Terning and Verhaaren’s theory is the correct one, and the darker versions of the half-magnets, lying in wait, somewhere in the universe, and as the dark side-the magnets act, such as a Dirac’s monopole — are also subtle clues in the path of the electrons.
Dark monopoles exist, they would emit dark photons, which can be transformed into regular photons, before it is absorbed by the electrons, Terning said. This interaction would cause the electron to rotate, or change, of course, but it is a very small amount, producing an interference pattern, this is called the Aharonov-Bohm effect. (Electrons are not just particles, they are waves, and an interference pattern is seen, as the peaks and troughs, the electron wave equation”, add up or cancel each other out, creating a series of parallel light and dark lines.) Terning and Verhaaren suggest that they may be able to detect this very slight shift in the electron interference patterns by means of electron microscopy.
Excited by the sun
If dark matter does exist, and it is in the us, and around us including in and around an electron beam in the microscope, we would use it to find out. But, in order to detect dark matter by the distortion of the electron, and the strange, half-magnets in which the dark matter would have a strong enough magnetic field. That means that half the magnets would have to have a lot of energy.
Monopoles that pass close to the sun could be excited to get more energy, and then make their way to the Earth, Terning said. He predicts that five out of the excited monopoles in a day and would have to go through something that is the size of the proposed electron-beam microscope. “That’s okay, because in conventional WIMP detectors, and would be happy if they got to five events per year,” he said.
In addition, the change in the electron phase, is caused by the dark side-the magnets are so small that, in order for it to be discovered, we would have to be incredibly high-resolution electron-beam microscopes are the ones currently in existence is probably not strong enough for that. In this electron microscope, it is necessary to come to a resolution that is five times greater than that which exist currently, Terning said.
In any case, we hope that we can get these people with the super-fine electron microscopy is interested in looking into it,” or we might have to build another one to sit and wait for the dark subject matter,” Terning said.
The various competing theories of dark matter, which would give us completely different stories about how the early universe formed, ” he said. What’s more, once you figure out what the dark matter is made of — whether it is light or heavy dust, the people could conceivably make it from the dark matter of the factories, of all kinds of species here on Earth. “If it’s very light, you don’t need a lot of energy in order to produce your very own dark matter.”
The scientists have published their research to the preprint journal arXiv. It is yet to be peer-reviewed.
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Originally published on Live Science.