Astrophysicists analyzed public data from the Antarctic Ice Cube Neutrino Observation Station. It turns out that a large part of the high-energy neutrino flux recorded by telescopes originated from Milky Way , that is, it was born in the Milky Way.
Macau galaxy
Article Published in the international authoritative journal "Journal of Astrophysics Express". The Milky Way is a projection of our spiral galaxy , which inspires scientists around the world, not just them. You go out tonight - beauty. The Milky Way is visible - billions of stars. Our big house. There are many galaxies in the universe, but we are in this galaxy, so its light dominates other galaxies.
But the Milky Way not only "glows" in the spectrum that is visible to the naked eye. With the transition to higher energy that we cannot see in our naked eyes, the extra-river source becomes important—although far away, but more powerful. But even in gamma rays, Galaxy dominates the sky. In addition to radiation from a single object, the interaction of high-energy cosmic rays with interstellar gas also contributes.
Russian physicists (MPIfR, Germany) from the Institute of Nuclear Research, Russian Academy of Sciences (INR RAS), Institute of Physics, Russian Academy of Sciences (FIAN), Moscow Institute of Physics Technology (MIPT), and Max Planck Institute of Radio Astronomy (MPIfR, Germany) are attracted by the neutrino radiation from the Milky Way. Neutrinos are unique elementary particles that can pass through matter without any obstacles and interact with them.
Recently, the neutrino telescope started working, and it successfully discovered high-energy neutrinos from space. The IceCube in the United States, our Russian Lake Baikal Neutrino Telescope (also known as the Baikal-GVD project), and the European KM3NeT are three neutrino telescopes whose data are analyzed by physicists around the world. But they still haven't seen the radiation from our natives, such a family galaxy. Although many theorists say year after year: stars with huge magnetic fields, like incident cosmic rays, can give birth to neutrinos. mystery!
color displays the sky with gamma rays, clearly depicting the galaxy plane. The direction of neutrinos reaching is indicated by a white circle. Galaxy Center ('GC') is marked with an asterisk. Russian neutrino telescope Baikal-GVD is sensitive to this sky region and is able to capture neutrinos from there.
from INR from INR correspondence academician Sergey Troitsky said: "Not long ago, the Carpet-2 facility (the Baksan Neutrino Observatory in INR RAS) detected an outbreak of the galaxy source while a high energy arrives - the energetic neutrinos registered by IceCube. This is the first evidence that neutrinos are actually generated in the Milky Way. But a neutrino doesn't prove it. It may be just a coincidence."
In their new article, a team of scientists wrote that they have managed to detect galaxy neutrino radiation. The article was published in the internationally authoritative journal, The Journal of Astrophysics, and is open to the public through the following address. Dr. Alexander Plavin of FIAN described this analytical technique: "We want to know if there are more neutrinos coming to Earth from the plane of the Milky Way than from other directions? We carefully collected all the cases of high-energy neutrino registrations observed in ten years and saw the Milky Way. The confidence level is 99.996%, which is very rare in neutrino astrophysics, where there is a lot of uncertainty, and mass data is still very rare." The fundamental discovery of
has been long-awaited, and on the other hand, it has brought new problems. Although neutrinos are concentrated on the Milky Way plane, they are not in a narrow band - the width of the neutrinos is twice the length of the Beidou barrel. Perhaps this suggests that a large part of neutrino was born not only in our Milky Way, but also in its nearest region. This remains to be processed.
RAS communications member Yuri Kovalev (FIAN and MIPT) concluded: "The new and more modern neutrino experiments conducted in the northern hemisphere - Baikal -GVD and KM3NeT - will soon be able to perform similar analysis of their data and study the regional center of the Milky Way in more detail. The neutrino telescope records the elementary particles "under the feet", and for us in the northern people, the center of the Milky Way is there. Meanwhile, focus on IceCube and Baikal-GVD Data, we can confidently say that the neutrino sky is not that simple - the huge contribution to astrophysics neutrino flux is generated by completely different categories of sources (the Milky Way and Outer River).
