Regular repetitive rapid radio flashes were observed

A team of Canadian astronomers have discovered fast radio bursts that are repeated in a regular 16-day cycle. Researchers published the results of their observations in a scientific article placed on the arXiv preprint portal.

Fast Radio Bursts (FRB), as the name implies, are fast radio bursts, occasionally observed by scientists listening for signals from space. FRBs appear randomly and last a very short time, making them extremely difficult to study. The first flash was observed in 2007 and since then only a few dozen of them have been discovered, of which 10 have appeared several times. As part of the latest observations, researchers observed the first FRB that appears in a regular cycle.

Despite many efforts, astronomers have not yet managed to determine what is the source of fast radio bursts. Some researchers suggest that they can only be noise after collisions of two stars. However, astronomy enthusiasts hope that these are signals emitted by foreign civilizations.

In this case, researchers analyzed data from the radio telescope involved in the Canadian Hydrogen Intensity Mapping Experiment study. After noticing the FRB data, researchers tracked 400 previous observations made with this telescope and found that the same radio flash appears in a constant 16-day cycle. Flashes appear approximately once an hour for 4 days and then disappear only to reappear 16 days later.

The repetition of this phenomenon may indicate that its source is a celestial body orbiting a star or other object. In this case, the signals would disappear for some time when they were hiding behind the object they are circling. However, even such a theory does not explain how any space object can regularly emit such flashes.

According to Canadian astronomers, the source of this regular FRB is in a spiral galaxy about 500 million light years away. It is possible that the largest terrestrial telescopes currently under construction will be able to identify a specific object in this galaxy, responsible for the emission of these characteristic flashes. Maybe then we will be able to determine how they arise.



Regular repetitive rapid radio flashes were observed

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