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Analysis of the Breakthrough Listen signal of interest blc1 with a technosignature verification framework

Space Sciences

Analysis of the Breakthrough Listen signal of interest blc1 with a technosignature verification framework

S. Z. Sheikh, S. Smith, et al.

Dive into the findings of the Breakthrough Listen SETI project as it delves into a narrowband signal detected near Proxima Centauri. This intriguing analysis uncovers that the detected signal, blc1, is not an extraterrestrial technosignature but rather a product of local interference. Join the authors in exploring the necessity for vigilant follow-ups in the search for signs of intelligent life beyond our planet.

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Playback language: English
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
Tags
SETI
Proxima Centauri
technosignatures
intermodulation
local interference
narrowband signal
Breakthrough Listen

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