Tag: ligo
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August’s kilonova in NGC 4993
Robert Naeye for Astronomy magazine, on the instrumentation that detected a 130M year-old kilonova: The LIGO and Virgo instruments detected a crescendo of waves for a whopping 100 seconds — much longer than previous detections. The duration, amplitude, and frequency of the waves had all the characteristics that theorists have expected for a binary system…