British scientists measure the upper limit of neutrino mass. The cosmologists of the school determined that the mass of neutrinos does not exceed 0.28 electron volts through observation and analysis of 3D images of cosmic galaxies. According to reports, this is the most accurate neutrino measurement so far. The application of this method has taken humans one step further towards the final accurate determination of neutrino mass. Related research papers will be published in the upcoming Physics Review Letters. Neutrinos are also called "ghost particles" in atoms and "invisible people" in the universe. They are extremely small and very light, which is difficult to capture. Although they have been proved to have quality, it is very difficult to determine their quality. According to the report, cosmologists at University College London have adopted a new method, which is to estimate the distance between galaxies by measuring the color of the cosmic galaxy, and then combine the giant 3D galaxy map and the temperature fluctuation information after the Big Bang Radiation), calculate a minimum upper limit for the mass of neutrinos: no more than 0.28 electron volts, which is less than one billionth of the mass of a hydrogen atom. The study is based on the following principle: matter in the universe will naturally form "clusters" and galaxy clusters, and a large number of neutrinos will have a huge cumulative effect on these matter in the universe. Neutrinos are extremely light, and they shuttle at extremely high speeds in the universe. This movement will have a "smoothing" effect on the "clusters" of matter in the universe. By analyzing the distribution of galaxies in the universe (such as how smooth galaxies tend to be), scientists can calculate the upper limit of neutrino mass. The core of this algorithm relies on Mega-Z, the largest ever 3D image of a galaxy, which covers more than 700,000 galaxies recorded by the Sloan Digital Sky Survey, making it possible to measure the known universe to the greatest extent possible. The author of the paper, Dr. Sean Thomas of University College London in the United Kingdom, pointed out that although neutrinos are less than 1% of the matter in the universe, they are an important part of the universe model, and their impact on the universe is amazing . Prof. Oval Rau, the head of the Astrophysics Society of University College London in the United Kingdom, pointed out that among all the hypotheses about mysterious dark matter, neutrinos are the only examples that can prove the existence of dark matter so far. The analysis of scale distribution to measure the quality of neutrinos is an extraordinary achievement. Dr. Thomas said that through larger universe investigation and analysis, such as the ongoing international dark energy investigation operation, more accurate data on the mass of neutrinos will be obtained, and the upper limit may be only 0.1 eV.
Wenzhou Vigorous Pet Products Co.,Ltd , http://www.vigorouspet.com