Scientists discover a mysterious barrier that separates the center of the Milky Way.
REPUBLIKA.CO.ID, JAKARTA – The universe holds millions of mysteries. So it is in our galaxy, the Milky Way Galaxy.
center Bima Sakti may be stranger than astronomers thought. A new study suggests there is a ‘barrier’ separating the center of the Milky Way from the sea of cosmic rays.
Reported in Live Science, Friday (19/11), the research was conducted by a research team from the Chinese Academy of Sciences in Nanjing. They investigated a map of the radioactive gamma rays that can emerge when extremely high-velocity particles called cosmic rays crash into ordinary matter, and explode in and around the center of our galaxy. Gamma rays are the highest energy form of light in the universe.
The map reveals that something near the galactic center appears to be accelerating particles to incredible speeds, very close to the speed of light, and creating a lot of cosmic rays and gamma rays outside the galactic center. However, in a research team report on November 9, 2021 in the journal Nature Communications, it is stated that when the galactic center blows a constant storm of high-energy radiation into space, something near the center of the Milky Way prevents most of the cosmic rays from other parts of the universe from entering.
The researchers describe the effect as an invisible “barrier” that wraps around the center of the galaxy and keeps the density of cosmic rays there significantly lower than the baseline level seen throughout the galaxy. In other words, cosmic rays can escape from the center of the galaxy, but are difficult to enter. However, how the cosmic barrier works, or why it exists, remains a mystery.