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The International Ice Research Group "frees" the celestial body "blizzard" over 3.7 billion light-years "
(Seoul-Yonhap News) Lee, Joo-young, research scientist in astrophysics, for the first time identified a celestial body emitting a high energy neutrino called "ghost particle"
It is about 39, a multi-messenger astronomy that studies the universe through various signals such as light, radio waves, X-rays, gamma rays, gravity waves and neutrinos as well as the opening of neutrino astronomy. ) Should become a greater opportunity.
IceCube Collaboration, which includes 300 scientists from 49 research institutes from 12 countries, published two high-energy neutrinos from two scientific papers published in the international journal Science. (Blazar), an astronomical object that lies 3.7 billion light-years away from Earth.
A team led by Professor Karsten Roth of the Sungkyunkwan University School of Physics and the Ice Cube Research Group also study research on high energy neutrinos and the search for dark matter by indirect methods.
The results of the study show that the Antarctic Glacier Neutrino Meteorological Observatory immediately detected a high-energy neutrino on 22 September of last year, then immediately launched the gamma-ray space telescope. Fermi from NASA and the Canary Islands gamma ray telescope. This is the first time we give evidence for a known blister (TXS 0506 + 056), which has been known to release follow-up observations around the world and release these high-energy neutrinos.
A cosmic ray of high energetic particles has been observed for over a hundred years, but it is still unclear how these particles are made and how they originate billions of light-years apart.
Among the cosmic rays, neutrinos are called "ghost particles" because they have no charge, they rarely react with common materials, and their mbad is so small that detection is difficult. If the trajectory is not curved due to the influence of the electromagnetic field or the like, tracking the direction of flight can detect the source of emission, but the detection itself is difficult.
Up to now, only the solar and supernova 1987A have been found. The low energy neutrinos of the sun still cross the earth and our bodies.
However, the neutrino detected by the Ice Cube Neutrophil Observatory last September is a high energy neutrino of 300TeV, more than one hundred thousand times more energy than the neutrinos emitted by the sun or supernova 1987A. It is more than 40 times more powerful than the energy (6.5 TeV) created by the Large Particle Collider (LHC) of the European Laboratory for Particle Physics (CERN), the most particle accelerator powerful.
These high-energy neutrinos are difficult to detect, but their origin is not known at all. To study it, the Ice Glacier Meteorological Observatory is constructed by drilling a hole in the ice of 1 부 by volume under the 1.5-kilometer basement of the Antarctic Antarctic Antarctic base and Antarctica. installing 5,100 optical sensors. The high energy neutrino reacts with atomic nuclei in ice to detect the presence of high energy neutrinos.
The Ice Cube Neutrino Meteorological Observatory detected one of the high-energy neutrinos (IceCube-170922A) on September 22 and immediately informed the world's largest telescopes to observe estimated objects as sources of emission.
The heavenly body estimated as a source of emission was Blaze TXS 0506 + 056, which was 3.7 billion light-years away to Orion. The blizzard is a celestial body that has a mbadive black hole that rotates rapidly in the center and emits a strong gamma ray in the direction of the axis of rotation.
The Fermi Gamma Telescope, the Cherenkov Gamma Telescope and the Pennsylvania State University (AMON) Multi-Messenger Observation Network received requests from Neutrino Meteorological Observatory Ice Cube. Francis Halzen Wisconsin – Madison University professor at the Neutrino Meteorological Observatory Ice Cube confirmed that achievements were possible with optical, radio and X-ray telescopes at the same time. "This study will be a new step in multi-signal astronomy," he said.
Multi-signal astronomy is the study of the same astronomical phenomena through other signals such as optics, radio, X-rays, gamma rays, waves gravity and neutrinos. Because each signal has different content to understand, it can understand the phenomenon such as black hole or supernova explosion more precisely.
Professor Suh Bong Kim of the Department of Physics and Astronomy of the Seoul National University said: "This study is of great significance because it confirms for the first time that the explosion ejecting the rays Gamma is a source of high-energy neutrino emission In addition to observations, multi-signal astronomy has become another major achievement in performing simultaneous observations of high-energy gamma neutrinos. "
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