A new survey found that there are two styles of mysterious radio flash, one of which is very unique

They may provide a new way for humans to observe the universe. (Image source: Gemini Observatory/National Science Foundation/National Radio -Observatory/Astronomical Research University Association)

Every two minutes, a mysterious radio flash explodes somewhere in the sky, and then disappears in the dark within a few milliseconds. Astronomers noticed this explosion for the first time in the data of the archives in 2007. For about ten years, they carefully collected examples of fast radioactive storm (FRB) to find the cause of FRB. Now they have 500 new explosions to be studied.

An international research cooperation released the first fast radio violence directory of the British Columbia Hydrogen Surveying and Mapping Experiment (Chime), Canada, which increased more than doubled the number of fast radio violence in one day. The new data strongly supports the view that there are two different types of fast -electricity storms in Radio -Sky. It indicates that future astronomers will likely use fast radio violence to brightly illuminate the universe.

"This represents a new stage of FRB science," Kiyoshi Masui, representative of the Massachusetts Institute of Technology, and representative of the Chime cooperation project, said at a press conference.

A machine looking for fast radio violence

Chime was originally designed to be the world's leading FRB phenomenon capture. Astronomers initially planned to use this machine to draw material in the universe through dark hydrogen atoms and explore unknown areas. But after the Canadian government funded this $ 9 million machine, researchers realized that it was completely suitable for solving the mystery of fast radio violence.

According to the new results of the Chime cooperation project, there are fast radio violence at any time in the sky, about 880 times a day. However, unless astronomers just have a large radio antenna, which accurately and random point in the sky is accurately aimed at the sky, the explosion is invisible.

However, Chime has a cosmic perspective. The wide receiver of the telescope receives the radio waves from most of the sky above the head. Due to the rotation of the earth, it will point to different directions. In addition, there is a $ 4.5 million supercomputer cluster to find fast radio storms. During the design process, the designer adds a part of the machine to make the telescope be able to digitize thousands of points at the same time.

Earlier, researchers tended to analyze fast radio violence based on specific conditions. Mohit Bhardwaj, a member of McGill University in Montreal, said at a press conference that the directory now opens the door to study a large number of fast -moving electrical storms, "the entire field will be Transition into big data science. "

The laws in random events

Most celestial physicists believe that fast radio violence comes from magnetic stars, one of the strangest phenomena after the death of a star. Magnetic star is a high -magnetic version of the star corpse of neutron stars. They are one of the most dense and most magnetic objects in the universe. Theoreticals believe that only by loading such a large quality and magnetic field intensity into such a small object can a brief explosion be launched strongly and flexibly. Then in 2020, Chime captured a magnetic star that was exploding in our galaxy. However, no one said how the magnetic star produced a radio waves.

Masui said: "There are too many theories, but there is no theory that it is right and which is wrong."

The directory almost confirms a long -term doubt: not all fast radio violences are the same. Astronomers have discovered a small number of fast radio storms. They repeatedly appeared at the same place in the sky and were called "repeated radio storms". In the newly discovered 535 emergencies, 61 explosions repeatedly occurred in 18 places.

Astronomers also found that repeated electric storms seem to be essentially different from one -time outbreak. The time of a one -time fast radio violence is very short, often a rainbow -like radio waves, and the duration of repeated eruptions is very long, and it often appears in a single radio color. This difference suggests that there are at least two different ways to launch wireless radio waves in magnetic stars.

Cross the universe

Regardless of the cause of fast radioactive storms, researchers are thinking about how to make the flash in the dark. The hundreds of eruptions seem to come from all directions, not alignment with the Milky Way. This shows that the cosmic lighthouses that emit them are scattered in the universe, many of which are from hundreds of millions to billions of light years.

Chime also captured a fast radio violence called scattering, which is a method for measuring the explosive radio frequency when the photon is spread between galaxies. When the FRB photon passes through the thin plasma of the filling space, this separation will intensify (just like the white light is separated into a rainbow). In this dispersal situation, each fast radio violence records the amount of substances it encountered during the journey, just like car tires record the history of their road.

With the increase of the CHIME Express Radioxidine Catalog, astronomers hope they can use it to draw a maximum range of cosmic material maps. "We think FRB will be the ultimate tool for studying the universe," Masui said.

By: Charlie Wood

Fy: Angelina yang gong

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