4 ms·
Strange BLC1 candidate radio waves were from Earth
- 8bitsrule 5y agoPreviously: [https://news.ycombinator.com/item?id=25562230 https://news.ycombinator.com/item?id=25562230] [https://news.ycombinator.com/item?id=25487578 https://news.ycombinator.com/item?id=25487578] [https://news.ycombinator.com/item?id=25476069 https://news.ycombinator.com/item?id=25476069] "Because the signal [982.002571 MHz, with a drift rate of 0.038 Hz s−1] didn’t reappear in the 2020 and 2021 observations, it might have been coming from malfunctioning electronic equipment that got shut down or fixed, says Sheikh. The team suspects the equipment was relatively close to Parkes, perhaps within a few hundred kilometres. The frequency of the signal drifts in a way that is consistent with inexpensive crystal oscillators such as those commonly used in computers, phones and radios, says Dan Werthimer, a SETI astronomer at UC Berkeley who specializes in signal processing." [doi: https://doi.org/10.1038/d41586-021-02931-7 https://doi.org/10.1038/d41586-021-02931-7]