A newly discovered source of repeating fast radio bursts has deepened the mystery of what, precisely, could be producing these powerful outbursts.
says astronomer Casey LawWe don't, for example, know whether one-off FRBs are repeating at energies too low for us to detect. But scientists have thought for some time that there may be at least two different mechanisms for producing the bursts, and the discovery of FRB 190520B is consistent with this idea.
Magnetars are a type of neutron star – the collapsed, ultra-dense core of a massive star after it has gone supernova and died – but they also feature an extremely powerful magnetic field. It's possible that normalFurther analysis suggests that another feature of fast radio bursts may not be as useful for measuring the Universe as astronomers may have thought.
"This means that there is a lot of material near the FRB that would confuse any attempt to use it to measure the gas between galaxies,"."If that's the case with others, then we can't count on using FRBs as cosmic yardsticks."
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