Results 31 to 40 of about 10,064 (262)
The Astrophysical JournalAre we alone? It is a compelling question that human beings have confronted for centuries. The search for extraterrestrial life is a broad range of quests for finding simple forms of life up to intelligent beings in the Universe. The plausible assumption
Shant Baghram
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Polarization Criterion in Targeted SETI Observation
The Astronomical Journal, 2023 In this paper, we propose a novel method for distinguishing extraterrestrial intelligence (ETI) signals from radio frequency interference (RFI) by leveraging polarization features.
Jian-Kang Li +7 more
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Search for Extraterrestrial Intelligence by Radio Observations [PDF]
Transactions of the International Astronomical Union, 1991 Jill Tarter
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Inferring the Rate of Technosignatures from 60 yr of Nondetection
The Astronomical Journal, 2023 For about the last 60 yr the search for extraterrestrial intelligence has been monitoring the sky for evidence of remotely detectable technological life beyond Earth, with no positive results to date.
Claudio Grimaldi
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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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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
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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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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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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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