Fast Radio Bursts (FRBs) are some of the most mysterious signals from deep space. These little-studied cosmic messages emanating from distant stars and black holes are most often characterized by their unpredictability, jumping around the universe for no apparent reason. According to the portal, one of such incredible interstellar signals, scientists were able to detect 500 million light years from Earth. Repeating every 16 days, the signal involuntarily makes us think about its artificial nature. Perhaps our “brothers in reason” are still found?

Alien Radio Signals

More than 120 years have passed since the transmission of the first artificial signal from Earth. During this time, radio waves could successfully overcome tens of millions of kilometers of outer space and be heard by representatives of some alien race, located next to the Earth. However, no matter how much we broadcast radio and television signals to the Universe, no matter how much we send special devices to search for aliens into space, we still have not found someone who could share the lonely fate of mankind in a limitless Universe. Or have you found?

One of the most unexpected findings of the 21st century was the discovery of a fast FRB radio burst, which is repeated in a regular cycle every 16 days. The signal, called FRB 180916.J0158 + 65, is actively played for four days, and then goes silent for 12 days. After almost two weeks of absolute silence, the fast radio signal is repeated again.

At present, the origin of the repeating radio signal does not lend itself to any attempt at an exhaustive explanation, although it is known for certain that FRB flashes are energetic bursts of radiation in the radio frequency spectrum that last no more than a few milliseconds. During this time, they can emit as much energy as they can create hundreds of millions of stars the size of the Sun.

To the great surprise of scientists involved in the study of FRB flares, the Canadian collaboration of CHIME researchers announced the discovery of nine more new sources of powerful radio interference at the end of 2019, as a result of which the total number of such repeaters reached 10 sources of FRB signals.

A new repeating radio signal comes from a powerful energy source, whose luminosity can reach the intensity of several million Suns

Finding a 16-day periodicity in a repeating signal source can be an important key to understanding the nature of a unique object, the analogues of which we have not yet seen in the observable Universe. Experts believe that the newly discovered object can be very different from the space formations we already know, which demonstrate periodicity. In addition, the signal FRB 180916.J0158 + 65 is one of the few fast signals whose origin was traced by modern equipment. So, the signal source is located on the outskirts of a spiral galaxy 500 million light years from us.

In this case, what could be a repeating signal from a distant galaxy? Scientists believe that the source of such powerful radiation is unlikely to be an artificially created object, since a flare of FRB radiation is in the star-forming region, where future young stars are only forming. The most likely candidates for the title of source of powerful radio signals may be, in this case, magnetars or black holes with stellar masses.

Despite a completely rational explanation of the possible nature of FRB signals, much weaker radio signals were found in the vicinity of the objects causing them, whose presence was hardly detected by modern equipment. In this case, perhaps the mystery of the mysterious signals of “aliens” is still waiting for its discoverer?