"China Sky Eye", new discovery

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"China Sky Eye" FAST Observation Express Radio -Storm Simulation Picture

The reporter learned from the National Observatory of the Chinese Academy of Sciences that research teams composed of scientific researchers from the National Sciences National Observatory, Peking University and other units use the 500 -meter -caliber -caliber facial radio telescope in Guizhou to a dynamic evolution process named a rapid radio storm named 20201124A in the universe. Observations were carried out and achieved important scientific research results, which were published on September 21, Beijing time on the international academic journal "Nature" magazine.

The short -term standard evolution of Faraday rotation volume. Fast observations are observed, but the outbreak of fast radio violence is not detected, indicating that the rapid radio violence suddenly goes out.

Fast radio violence is an occasional radio astronomical phenomenon in the universe. Within a few milliseconds, the energy released by the fast radio -Electric Stranger is equivalent to tens of billions of years of power generation in the world. Fast radio power was discovered for the first time in 2007, and hundreds of them have been discovered so far.

Fast radio storm 20201124A The oscillation phenomenon of line/round polarization and polarizable position angle detected

The scientific research team monitored 1863 outbreaks of the fast radio storm in the nearly three months of observation of the rapid radio storm 20201124A, and obtained the largest fast radio violence margin observation sample to date, and carried out the evolution of its physical properties. Analysis. Studies have found that fast radioine storms have radiated to extremely fast. Within 72 hours, it can evolve from a very strong radio power explosion to a state of no radio power, that is, the hate of fast radio storm.

In addition, for the first time, the scientific research team detected high -circular polarizing pulse in fast radio violence, and its maximum value reached 75%, and the polarization phenomenon was observed. These all indicate that within a range of a day away from this fast radio violence, the magnetic field is very complicated and evolved continuously. In addition, the scientific research team also found that the host galaxy of the fast radioactive storm is a rotal galaxy that is similar to the galaxy and is rich in metal -rich, and the stars density in the area is low, indicating that the fast radio violence does not originate from large -scale stars. Young magnetic stars formed after the ultra -bright supernova or gamma ray caused by extreme explosions.

The team's spectrum and high -resolution imaging observation of the host galaxy of fast radio raw storm 20201124A through the KECK telescope observation

According to Li Kejia, a researcher at the National Observatory of the Chinese Academy of Sciences and a professor at the School of Physics at Peking University, relying on the sensitivity of the "China Sky Eye" FAST, the scientific research team was able to observe the dynamic evolution process of rapid radiation storms for the first time and formed a complete dynamic evolutionary image. This series of achievements is an important observation data for future scientists to study the physical characteristics of fast radio storms.

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