An international research team has discovered 25 new repeating fast radio bursts (FRBs), which are powerful pulses of radio emission that come from outer space.
These signals were first recorded over a decade ago, and more than 500 have been identified since then.
Some short radio bursts are repeated at regular intervals, and 25 previously unknown recurring FRBs were described in the new study, doubling their total number to 50.
This suggests that many of the single signals recorded earlier may be repeating, but they haven’t been observed long enough to detect a second burst from the same source.
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All FRBs are emitted from sources far outside the Milky Way, and one hypothesis is that the dense cores of once massive exploded stars with powerful magnetic fields can serve as sources of such signals.
However, repeating FRBs have different characteristics than single FRBs, suggesting that there may be other sources of these signals.
The observations were made by astronomers from around the world in the Canadian Hydrogen Intensity Mapping Experiment (CHIME)/FRB collaboration, which specializes in finding mysterious signals.
The observations were carried out from 2019 to 2021, and although it has not yet been possible to trace the sources of the origin of the signals, it is clear that they are located far from our planet.
The signals were not identical in their cyclicity, with some repeated only once and others up to 12 times.
The study, published in The Astrophysical Journal, is an important step in the study of FRBs and could lead to new discoveries in space science.
The new data could help scientists better understand the origin of these mysterious signals and unravel many of the mysteries of the cosmos.