LOS ANGELES - After finding the first-known repeating fast radio bursts (FRBs) in February, researchers have discovered another repeating FRB in deep space that has them baffled.FRB 121102, which has been observed since 2016 by the Lovell Telescope in the U.K., was discovered to have a 157-day repeating pattern.
It shows activity for 90 days and then goes silent for 67 days, according to a newly published study in the Monthly Notices of the Royal Astronomical Society."Using the pulses detected in the Lovell data along with pulses from the literature, we report a detection of periodic behavior of the source over the span of 5 yr of data," researchers wrote in the study.