Results 31 to 40 of about 706 (217)
A 4–8 GHz Galactic Center Search for Periodic Technosignatures
The Astronomical Journal, 2023 Radio searches for extraterrestrial intelligence have mainly targeted the discovery of narrowband continuous-wave beacons and artificially dispersed broadband bursts.
Akshay Suresh +8 more
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Biosemiotic knowledge — a prerequisite for valid explorations of extraterrestrial intelligent life
Sign Systems Studies, 2002 The scientific search for extraterrestrial intelligent life is probably one of the most ambitious projects ever taken in biology. The article discusses methodological problems associated with the search.
Elling Ulvestad
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The Astrophysical Journal, 2023 I apply the thermodynamics of radiation to Dyson spheres as machines that do work or computation and examine their observational consequences. I identify four properties of Dyson spheres that complicate typical analyses: globally, they may do no work in ...
Jason T. Wright
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A Search for Extraterrestrial Technosignatures in Archival FAST Survey Data Using a New Procedure
The Astronomical Journal, 2023 The search for extraterrestrial intelligence (SETI) commensal surveys aim to scan the sky to find possible technosignatures from an extraterrestrial intelligence (ETI). The mitigation of radio frequency interference (RFI) is an important step, especially
Yu-Chen Wang +6 more
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Developing a Drift Rate Distribution for Technosignature Searches of Exoplanets
The Astronomical Journal, 2023 A stable-frequency transmitter with relative radial acceleration to a receiver will show a change in received frequency over time, known as a “drift rate.” For a transmission from an exoplanet, we must account for multiple components of drift rate: the ...
Megan G. Li +6 more
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The Local Galactic Transient Survey Applied to an Optical Search for Directed Intelligence
The Astrophysical JournalWe discuss our transient search for directed energy systems in local galaxies, with calculations indicating the ability of modest searches to detect optical Search for Extraterrestrial Intelligence sources in the closest galaxies. Our analysis follows P.
Alex Thomas +28 more
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The Breakthrough Listen Search for Intelligent Life: Technosignature Search of 97 Nearby Galaxies
The Astronomical Journal, 2023 The Breakthrough Listen search for intelligent life is, to date, the most extensive technosignature search of nearby celestial objects. We present a radio technosignature search of the centers of 97 nearby galaxies, observed by Breakthrough Listen at the
Carmen Choza +20 more
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From Lab to Landscape: Environmental Biohybrid Robotics for Ecological Futures
Advanced Robotics Research, EarlyView.This Perspective explores environmental biohybrid robotics, integrating living tissues, microorganisms, and insects for operation in real‐world ecosystems. It traces the leap from laboratory experiments to forests, wetlands, and urban environments and discusses key challenges, development pathways, and opportunities for ecological monitoring and ...
Miriam Filippi
wiley +1 more source
Using Anomaly Detection to Search for Technosignatures in Breakthrough Listen Observations
The Astronomical JournalWe implement a machine learning algorithm to search for extraterrestrial technosignatures in radio observations of several hundred nearby stars, obtained with the Parkes and Green Bank Telescopes by the Breakthrough Listen collaboration.
Snir Pardo +4 more
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A Simultaneous Dual-site Technosignature Search Using International LOFAR Stations
The Astronomical Journal, 2023 The Search for Extraterrestrial Intelligence aims to find evidence of technosignatures, which can point toward the possible existence of technologically advanced extraterrestrial life. Radio signals similar to those engineered on Earth may be transmitted
Owen A. Johnson +21 more
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