A periodic signal that persists indefinitely, without changing its amplitude, frequency, or Phase–a continuous wave (CW) signal–carries no information other than the fact that it is present. In order ...
The signal, dubbed FRB 20191221A, is the longest-lasting FRB ever discovered and has a clear periodic pattern, repeating every 0.2 seconds for up to three seconds. That’s about 1,000 times longer than ...
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