Results 1 to 10 of about 283 (144)
Technosignatures: Frameworks for Their Assessment
Astrophysical Journal, 2023 In view of the promising advancements in technosignature science, the question of what constitutes a robust technosignature is rendered crucial. In this paper, we first delineate a Bayesian framework for ascertaining the reliability of potential ...
Manasvi Lingam +2 more
exaly +4 more sources
Technosignatures Longevity and Lindy's Law
Astronomical JournalThe probability of detecting technosignatures (i.e., evidence of technological activity beyond Earth) increases with their longevity, or the time interval over which they manifest.
A Balbi, C Grimaldi
exaly +6 more sources
Longevity Is the Key Factor in the Search for Technosignatures [PDF]
Astronomical Journal, 2021 Abstract It is well known that the chances of success of the search for extraterrestrial intelligence depend on the longevity of technological civilizations or, more broadly, on the duration of the signs of their existence, or technosignatures.
A Balbi, Milan M Cirkovic
exaly +5 more sources
Astronomical JournalThe field of Search for Extraterrestrial Intelligence (SETI) searches for “technosignatures” could provide the first detection of life beyond Earth through the technology that an extraterrestrial intelligence may have created.
Sofia Z Sheikh +2 more
exaly +3 more sources
An Extragalactic Widefield Search for Technosignatures with the Murchison Widefield Array
Astrophysical JournalIt is common for surveys that are designed to find artificial signals generated by distant civilizations to focus on galactic sources. Recently, researchers have started focusing on searching for all other sources within the field observed, including the
S J Tingay
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Fully fluorinated non-carbon compounds NF3 and SF6 as ideal technosignature gases [PDF]
Scientific Reports, 2023 Waste gas products from technological civilizations may accumulate in an exoplanet atmosphere to detectable levels. We propose nitrogen trifluoride (NF3) and sulfur hexafluoride (SF6) as ideal technosignature gases.
Sara Seager +5 more
doaj +2 more sources
Detecting Technosignatures from Earth-scale Civilizations
Astrophysical Journal, 2023 Assuming civilizations have similar interplanetary communications and radar capability to NASA’s Deep Space Network, what is the feasibility of intercepting their communications? Interplanetary conjunctions between Earth-like exoplanets, their stars, and
Reza Ashtari
exaly +2 more sources
Detectability of Solar Panels as a Technosignature
The Astrophysical JournalIn this work, we assess the potential detectability of solar panels made of silicon on an Earth-like exoplanet as a potential technosignature. Silicon-based photovoltaic cells have high reflectance in the ultraviolet-to-visible (UV-VIS) and in the near ...
Ravi Kopparapu +4 more
doaj +3 more sources
A note on the Vukotić-Gordon mini-earths [PDF]
Serbian Astronomical Journal, 2023 A recent proposal for a new kind of astroengineering artifact due to Vukotić and Gordon (2022) is discussed, in particular in light of multiple benefits offered by the magnetic Penrose process.
Ćirković Milan M.
doaj +1 more source
Polycyclic Aromatic Hydrocarbons as an Extraterrestrial Atmospheric Technosignature
The Planetary Science JournalPolycyclic aromatic hydrocarbons (PAHs) are prevalent in the Universe and interstellar medium but are primarily attributed to anthropogenic sources on Earth, such as fossil fuel combustion and firewood burning.
Dwaipayan Dubey +3 more
doaj +3 more sources