Results 1 to 10 of about 588 (145)
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 +3 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.
Amedeo Balbi, C Grimaldi
exaly +5 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
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.
Amedeo Balbi, Milan M Cirkovic
exaly +4 more sources
Bayesian approach to SETI. [PDF]
Proc Natl Acad Sci U S A, 2018 The search for technosignatures from hypothetical galactic civilizations is going through a new phase of intense activity. For the first time, a significant fraction of the vast search space is expected to be sampled in the foreseeable future ...
Grimaldi C, Marcy GW.
europepmc +2 more sources
An objective Bayesian analysis of life's early start and our late arrival. [PDF]
Proc Natl Acad Sci U S A, 2020 Life emerged on the Earth within the first quintile of its habitable window, but a technological civilization did not blossom until its last. Efforts to infer the rate of abiogenesis, based on its early emergence, are frustrated by the selection effect ...
Kipping D.
europepmc +2 more sources
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
A VERITAS/Breakthrough Listen Search for Optical Technosignatures
The Astronomical Journal, 2023 The Breakthrough Listen Initiative is conducting a program using multiple telescopes around the world to search for “technosignatures”: artificial transmitters of extraterrestrial origin from beyond our solar system.
A. Acharyya +68 more
doaj +2 more sources
The search for signs of life on exoplanets at the interface of chemistry and planetary science. [PDF]
Sci Adv, 2015 The discovery of thousands of exoplanets in the last two decades that are so different from planets in our own solar system challenges many areas of traditional planetary science.
Seager S, Bains W.
europepmc +3 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