The Crab Nebula, a famous supernova remnant in the constellation of Taurus (the supernova outburst was documented in detail by astronomers in China's Song Dynasty in 1054), is located about 6,500 light-years away from Earth, and is energized by the high-speed pulsars, or Crab Nebula Pulsars, that are located within it. The Crab Nebula's high luminosity across the entire electromagnetic spectrum has led scientists to observe and study the Crab Nebula in detail across the entire electromagnetic spectrum, from radio, optical, X-rays, and gamma rays. However, as the photon energy increases, the photon flow intensity becomes lower and lower, and observation becomes more and more difficult. Previously, the highest energy gamma ray detected internationally was 75 TeV, which was observed by the HEGRA Cherenkov Telescope Experiment Group in Germany. The Sino-Japanese team of the ASgamma experiment discovered 24 instances of gamma rays above 100 TeV, exceeding the cosmic ray background by a factor of 5.6 in standard deviation, with the highest energy of about 450 TeV.
The researchers believe that these high-energy photons above 100 TeV may be the result of higher-energy electrons interacting with photons from the surrounding cosmic microwave background radiation, and may be the result of "inverse Compton scattering. "inverse Compton scattering," while ultra-high-energy electrons and positrons are produced in the pulsar wind clouds of the Crab Nebula. It can be inferred that the Crab Nebula is a "natural high-energy particle gas pedal in the Milky Way", and compared with the world's largest artificial electron gas pedal (accelerating electrons with a maximum energy of 0.2 TeV), the electron accelerating capacity of the Crab Nebula Compared to the world's largest artificial electron accelerator (which accelerates electrons at a maximum energy of 0.2 TeV), the Crab Nebula accelerates electrons at least ten thousand times higher.
According to reports, the Tibet Yangbajing ASgamma experiment is located at an altitude of 4,300 meters in Tibet Yangbajing, a phase of the array was built in 1990 and began to operate, and later upgraded many times, in the Galaxy cosmic ray detection research made a series of major discoveries.
(Source: People's Daily client)