Scientists say they have found the first fast radio burst that has a steady repeating cycle.
Most FRB sources emit a single one-off burst. But a minority—around 10—have been shown to repeat, although the bursts appear to be sporadic without a regular pattern.
By analyzing data collected by the CHIME radio telescope in British Columbia, the team worked out that the source known as FRB 180916.J0158+65 emits radio bursts with a seemingly regular pattern based on a 16-day cycle.has revealed, the FRB in question lies in a star-forming region in the outskirts of a galaxy located around 500 million light-years from Earth—making it the closest known FRB to Earth.
In the study period—September 2018 to October 2019—the researchers observed that some cycles did not produce any detectable bursts. However, the FRB source would often produce multiple bursts, and these adhered to the pattern of the 16-day cycle."We conclude that this is the first detected periodicity of any kind in an FRB source," the team said in a paper published on the preprint server arXiv in late January."The discovery of a 16.
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