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A quantitative assessment of communicating extra-terrestrial intelligent civilizations in the galaxy and the case of FRB-like signals |
Bing Zhang() |
Department of Physics and Astronomy, University of Nevada Las Vegas, NV 89154, USA |
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Abstract A formula is proposed to quantitatively estimate the signal emission rate of Communicating Extra-Terrestrial Intelligent civilizations (CETIs) in the Galaxy. I suggest that one possible type of CETI signal would be brief radio bursts similar to fast radio bursts (FRBs). A dedicated search for FRB–like artificial signals in the Galaxy for decades may pose a meaningful upper limit on the emission rate of these signals by CETIs. The Fermi-Hart paradox is answered in terms of not having enough observing times for this and other types of signals. Whether humans should send FRB-like signals in the far future is briefly discussed.
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Keywords
fast radio bursts
astrobilogy
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Corresponding Author(s):
Bing Zhang
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Issue Date: 20 July 2020
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