Analysis of the Breakthrough Listen signal of interest blc1 with

Index

Abstract

The Breakthrough Listen SETI project observed Proxima Centauri, detecting a narrowband signal (blc1) near 982 MHz. This paper presents an analysis procedure for potential technosignatures, applied to blc1. The analysis reveals blc1 is not an extraterrestrial technosignature but an electronically drifting intermodulation product of local interferers. Dozens of similar interference instances highlight the need for detailed follow-up of potential technosignatures.

Publisher

Nature Astronomy

Published On

Nov 25, 2021

Authors

Sofia Z. Sheikh, Shane Smith, Danny C. Price, David DeBoer, Brian C. Lacki, Daniel J. Czech, Steve Croft, Vishal Gajjar, Howard Isaacson, Matt Lebofsky, David H. E. MacMahon, Cherry Ng, Karen I. Perez, Andrew P. V. Siemion, Claire Isabel Webb, Andrew Zic, Jamie Drew, S. Pete Worden

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