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Scientists share new details about mysterious "ghost particle"



Neutrinos are called ghostly because they are extremely volatile or vapor, cosmic particles that can pass through any type of matter without changing. They have almost no mass – but now scientists have calculated the mass of the lightest type of neutrino.

They can travel through the most extreme environments, such as stars, planets, and entire galaxies, and stay the same. But neutrinos, though very energetic, do not have a charge. Even the most powerful magnetic field cannot affect them.

Last year, scientists were able to trace the origin of the high-energy neutrino for the first time. It passed 3.7 billion light-years to Earth. It was detected by sensors deep in the Antarctic ice in the IceCube detector.

Scientists and observatories around the world have been able to track neutrinos to a galaxy with a supermassive, fast-spinning black hole in its center, known as the Blaster. The galaxy sits to the left of Orion's shoulder in its constellation and is located about 4 billion light-years from Earth. The different types of neutrinos appear as three different masses, but the lightest one has been unknown so far. And astronomers still don't know much about the differences in these three types.

The study published Thursday in the journal Physical Review Letters.
  The greatest mystery of the universe

"One hundred billion neutrinos fly through your thumb from the sun every second, even at night, even "Says Arthur Lureiro, author of the study and a PhD student at the University College of Physics at London & Department of Astronomy." These are very little interactive ghosts that we know little about. What we do know is that as they move, they can change between their three tastes and this can only happen if at least two of their masses with non-zero. " [

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they can be compared to ice cream, where you have a spoon containing strawberries, chocolate and vanilla, "Lureiro said. "Three scents are always present, but in different proportions, and the changing ratio – and the strange behavior of the particle – can only be explained by a neutrino with mass."

for Physics 2015

To calculate the low mass of the lightest neutrino, data from 1.1 million galaxies collected by particle physicists and cosmologists were used. This allowed them to measure the rate of expansion of the universe. Neutrinos are widespread in the universe, but hard to spot. Scientists needed as much data as possible to have all the benefits of their research.

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information from various sources, including space and terrestrial telescopes observing the first light of the universe, exploding stars, the largest 3D map of galaxies in the universe, particle accelerators, nuclear reactors, and more. "says Lureiro." Because neutrinos are plentiful but tiny and elusive, we need all the knowledge available to calculate their mass, and our method can be applied to other big questions, puzzling cosmologists and particle physicists alike. "

The supercomputer, known as Grace, at University College London allowed researchers to create a mathematical model. The supercomputer lengthened half a million computational hours, which would take 60 years to a single processor.

Researchers find 10 million times the mass Calculating this mass can help researchers studying dark matter, dark energy, and the structure of the universe.


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