Results 41 to 50 of about 362 (148)
Persistence of Technosignatures: A Comment on Lingam and Loeb [PDF]
Astrobiology, 2019 In a recent paper in this journal, Lingam and Loeb (2018) develop an excellent heuristic for searches for biosignatures vs. technosignatures. We consider two ways in which their approach could be extended and sharpened, with focus on durability of technosignatures.
Ćirković, Milan M. +2 more
openaire +3 more sources
Time Markers for SETI in Binary Systems: History and Prospects
AstronomyContemporary surveys in the search for extraterrestrial intelligence (SETI) typically make one-off “spot scans” across the sky to search planetary systems for narrow-band radio signals that would indicate the presence of intelligent life.
Jacob Haqq-Misra
doaj +1 more source
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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What is the noosphere? Planetary superorganism, major evolutionary transition and emergence
Systems Research and Behavioral Science, Volume 41, Issue 4, Page 614-622, July/August 2024.Abstract The noosphere remains an underappreciated and understudied idea despite that it provides unique hope towards a positive and meaningful global integration. A core reason for this lack of attention is that its very definition is often unclear both in the West with Teilhard de Chardin and in the East with Vernadsky.
Clément Vidal
wiley +1 more source
A Search for Technosignatures Around 11,680 Stars with the Green Bank Telescope at 1.15–1.73 GHz
The Astronomical Journal, 2023 We conducted a search for narrowband radio signals over four observing sessions in 2020–2023 with the L -band receiver (1.15–1.73 GHz) of the 100 m diameter Green Bank Telescope.
Jean-Luc Margot +79 more
doaj +1 more source
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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Technosignatures in the Thermal Infrared
, 2019 WISE, Gaia, and JWST provide an opportunity to compute the first robust upper limits on the energy supplies of extraterrestrial civilizations, both for stars in the Galaxy (Kardashev Type II civilizations) and for other galaxies (Kardashev Type III civilizations). Together, they allow for a nearly-complete catalog of nearby stars with infrared excesses,
Wright, Jason T. +2 more
openaire +2 more sources
The Astronomical JournalThe search for extraterrestrial intelligence at radio frequencies has focused on spatial filtering as a primary discriminant from terrestrial interference.
Bryan Brzycki +9 more
doaj +1 more source
The Puzzle of Meteoritic Minerals Heideite and Brezinaite; Are they Iron-based Superconductors? Are they Technosignatures? [PDF]
, 2022 B.P. Embaid
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Technosignature Search with the Allen Telescope Array
, 2022 Abstract: SETI surveys have been typically conducted at lower frequencies, i.e., less than 1.5 GHz. Utilizing the new hardware upgrades and the newly deployed Digital Signal Processing (DSP) backend of the Allen Telescope Array (ATA), we present an ongoing SETI survey of over 300 stars selected from the REsearch Consortium On Nearby Stars (RECONS ...
Premnath, Pranav, Farah, Wael
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