Results 21 to 30 of about 9,758 (243)
Multibeam Blind Search of Targeted SETI Observations toward 33 Exoplanet Systems with FAST
The Astronomical Journal, 2023 The search for extraterrestrial intelligence (SETI) is to search for technosignatures associated with extraterrestrial life, such as engineered radio signals.
Xiao-Hang Luan +10 more
doaj +1 more source
Signal Synchronization Strategies and Time Domain SETI with Gaia DR3
The Astronomical Journal, 2023 Spatiotemporal techniques for signal coordination with actively transmitting extraterrestrial civilizations, without the need for prior communication, can constrain technosignature searches to a significantly smaller coordinate space.
Andy Nilipour +3 more
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The Most Sensitive SETI Observations Toward Barnard's Star with FAST
The Astronomical Journal, 2023 Search for extraterrestrial intelligence (SETI) has been mainly focused on nearby stars and their planets in recent years. Barnard’s star is the second closest star system to the Sun and the closest star in the Five-hundred-meter Aperture Spherical radio
Zhen-Zhao Tao +6 more
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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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Angewandte Chemie, EarlyView.This study explores the origins of life by linking prebiotic chemistry, the emergence of information‐carrying molecules such as RNA and proteins, and philosophical questions about consciousness. The study emphasizes the role of molecular evolution in the Central Dogma and provides insights into the chemical origins of biology and the basis of life's ...
Harald Schwalbe +5 more
wiley +2 more sources
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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Wide-bandwidth high-resolution search for extraterrestrial intelligence [PDF]
This interim report summarizes the research accomplished during the initial 6-month period of the grant. Activities associated with antenna configurations, the channelizing downconverter, the fast Fourier transform array, the DSP (digital signal ...
Horowitz, Paul
core +7 more sources
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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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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