Russian researchers compared the data with the neutrino telescope IceCube in Antarctica and radio-astronomical observations of quasars. As a result, they have found a link between cosmic neutrinos and flares in active galactic nuclei. Research shows that high-energy neutrinos are born near supermassive black holes in the centers of galaxies.
On their work, the authors said in an article published in The Astrophysical Journal.
Neutrinos — one of the most mysterious and interesting science of particles. Scientists allocate three of their kind, but the exact mass is not one of them has not yet managed to establish. High-energy neutrinos can be produced only with the help of protons accelerated to extremely high speeds. In 2010 year, the IceCube neutrino Observatory. It registers such high-energy neutrinos makes the measurement of their energies and calculates the center.
Researchers from the physics Institute imeni P. N. Lebedev of RAS, Moscow physical and technical and the Institute for nuclear research RAS decided to conduct an analysis of the origin of ultrahigh-energy neutrinos — more than 200 teraelectronvolt. Researchers compared data obtained with the IceCube Observatory with numerous telescopes observations and found that these particles are produced in the centers of massive quasars. Moreover, the authors found a connection between the birth of neutrinos and bursts of radio emission in these active cores.
In the first stage, the astronomers showed that the direction from which on the Earth of neutrinos of ultrahigh energies, coincide with the position of bright quasars according to the network of radio telescopes around the world. In the second phase, physicists have tested the hypothesis that neutrinos of ultrahigh energies appear in galaxies during flares of radio emission. To do this, the authors analyzed data from the Russian telescope RATAN-600, which is located in Karachay-Cherkess Republic.
Previously, the sources of such neutrinos are searched for mainly in gamma rays because it was believed that neutrinos must be born with gamma rays.
Now the authors are going to check your score and learn more about the mechanisms of birth of the neutrino in quasars. This they plan to achieve using the data of the telescope Baikal-GVD, which is currently being completed on the lake and started the data set. As for IceCube, in Baikal-GVD apply water Cherenkov detectors. They have a large volume of ice or water allows you to increase the number of detected neutrinos and simultaneously to avoid accidental operation of the detector.
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