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The radio signal itself, detected in the spring of 2019 and reported earlier in The Guardian, is in many ways the dream of alien hunters. This was a narrowband signal with a frequency of 982.02 MHz, as recorded at Parkes Observatory in Australia. Nature, whether it’s an explosive star or a geomagnetic storm, tends to diffuse over a wide range of frequencies.
“The signal seems to only show up in our data when we look in the direction of Proxima Centauri, which is exciting,” Ms. Sheikh said. “It’s a threshold that has never been crossed by any signal we’ve seen before, but there are a lot of caveats.”
Practitioners in the hopeful field of extraterrestrial intelligence research, also known as SETI, say they have seen it all before.
“We’ve seen these types of signals before, and it always turned out to be radio interference,” wrote Dan Werthimer, chief technologist at the Berkeley SETI Research Center, which is not part of the Proxima Centauri study. E-mail.
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