Astronomers Find 25 Fast Radio Bursts That Repeat on a Regular Basis universetoday storybywill
Despite their mysterious nature, FRBs are ubiquitous and the best estimates indicate that events arrive at Earth roughly a thousand times a day over the entire sky. None of the theories or models proposed to date can fully explain all the properties of the bursts or the sources. While some are believed to be caused by neutron stars and black holes , others continue to defy classification.
As Dunlap Postdoctoral Fellow and lead author Ziggy Pleunis told Universe Today, each FRB is described by its position in the sky and a quantity known as its Dispersion Measure . This refers to the time delay from high to low frequencies caused by the burst’s interactions with material as it travels through space. In a paper released in August 2021, the CHIME/FRB Collaboration presented the
Of the over 1000 FRBs detected to date, only 29 were identified as repeating in nature. What’s more, virtually all repeating FRBs were found to be repeating in irregular ways. The only exception is FRB 180915, discovered by researchers at CHIME in 2018 and pulses every 16.35 days. With the help of this new algorithm, the CHIME/FRB collaboration detected 25 new repeating sources, almost doubling the number available for study.
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