Results 1 to 10 of about 362 (148)
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
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Technosignatures Longevity and Lindy's Law [PDF]
The 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, Claudio Grimaldi
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Specular Reflections from Artificial Surfaces as Technosignature [PDF]
Astrobiology, 2023 2 figures, 4 pages, published in ...
Bhavesh Jaiswal
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A VERITAS/Breakthrough Listen Search for Optical Technosignatures [PDF]
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
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Setigen: Simulating Radio Technosignatures for SETI [PDF]
, 2022 The goal of the search for extraterrestrial intelligence (SETI) is the detection of non-human technosignatures, such as technology-produced emission in radio observations. While many have speculated about the character of such technosignatures, radio SETI fundamentally involves searching for signals that not only have never been detected, but also have
Bryan Brzycki +8 more
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Technosignatures: Frameworks for Their Assessment
The 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 +5 more
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Detecting Technosignatures from Earth-scale Civilizations
The 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
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Exoplanet Occultations as Technosignature Targets
, 2021 Recent SETI surveys have increased the fraction of the cosmic haystack that has been analyzed by focusing on increasing the number of studied target systems and the total time each target is observed. However, few of these surveys have considered when is best to observe their targets; often instead relying on the assumption that technosignature targets
Evan L. Sneed
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The Fermi Paradox Revisited: Technosignatures and the Contact Era [PDF]
The Astrophysical Journal, 2022 Abstract A new solution to the Fermi Paradox is presented: probes or visits from putative alien civilizations have a very low probability until a civilization reaches a certain age (called the “Contact Era”) after the onset of radio communications.
Amri Wandel
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NASA and the Search for Technosignatures: A Report from the NASA Technosignatures Workshop [PDF]
, 2018 This report is the product of the NASA Technosignatures Workshop held at the Lunar and Planetary Institute in Houston, Texas, in September 2018. This workshop was convened by NASA for the organization to learn more about the current field and state of the art of searches for technosignatures, and what role NASA might play in these searches in the ...
NASA Technosignatures Workshop Participants
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