Every so often, a strange signal from outer space hits our detectors here on Earth.
called a magnetar, whose insanely powerful external magnetic field fights against the inward pull of gravity, causing the star to occasionally quake and flare.
But while misbehaving magnetars present one explanation, we don't know if that's the whole picture. FRBs vary quite a bit, and it's likely that there's more than one mechanism that can produce them., particularly if neutron stars are involved, either during or following the gravitational wave detection.of observations from July 2018 to July 2019 overlapped with the LIGO-Virgo observation run, for a total of 171 FRB events.
GW20190425 was observed by LIGO on 25 April 2019 at 18:18:05 UTC. The absence of a detection by the Virgo detector helped constrain the region from which the detection had emerged. Its estimated distance was aroundFRB20190425A was detected the same day, at 10:46:33 UTC, within the range of sky LIGO had laid out as a plausible source of the neutron star merger, and with an upper distance limit of 590 million light-years.
This, they found, would be an uncanny coincidence if the two were unrelated. The probability of the two events occurring at the distances given, the timeframe of detection, and within the region of space defined by LIGO was just 0.00019, the researchers calculated., but the mechanism that produced the FRB might take a little more analysis.
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