Astronomers noticed an unusual outbreak.
Researchers examined eight repetitive radio signals from deep space, known as fast radio bursts (FRB).
Signals were detected by radio telescope of the Canadian experiment for mapping the intensity of the hydrogen (CHIME), writes the online edition of the Chronicle.info with reference to NV.
CHIME is optimized to monitor a very wide band of the sky in a lower frequency range than radio telescopes such as ASKAP or the Parkes Observatory in Australia that also found the FRB.
In early 2019-only one such mysterious signals FRB 121102, appeared repeatedly. In January, scientists reported the second repetition of the signal FRB 180814. Now the total number of duplicate FRB has changed to 10.
Scientists intend to determine what part of the Universe they did, and find similarities and differences between repeating FRB. Signals are transmitted serially, and the longest pause between accounted for more than 20 hours.
Fast radio bursts are definitely puzzling. They show up as peaks in the radio data, lasting only a few milliseconds. But this time, they can discharge more energy than 500 million Suns. Most FRB detected only once and cannot be predicted, therefore, to trace them to their source is very difficult.
“There is a difference between sources, and some are more prolific than others. After the discovery of FRB 121102 we already knew that the signals can be clustered: sometimes the source doesn’t work for hours and hours, and then suddenly you get a few packs of data in a short period of time,” said physicist ziggy Pleunis from McGill University.
The first two repeated rapid burst — FRB and FRB 121102 180814 — showed a downward frequency drift, and each package became consistently lower. Most of the eight new repeaters also showed this downward frequency shift. This can be the key to understanding what produces the signals.