Results 61 to 70 of about 167 (129)
Technosignatures Gap List Study
, 2022 Abstract: Motivation and Objective: The ExEP (Exoplanet Exploration Program) is a program within NASA’s Astrophysics Division whose charter includes identification and development of key technologies to enable the discovery of habitable worlds. We are following up on the 2018 NASA Technosignatures (TS) Workshop report to inform the ExEP with a thorough
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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
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The Search for Technosignatures: a Review of Possibilities
This paper aims to review the diverse range of technosignatures that have been proposed in theliterature. We organize the review by scales, starting carefully from Earth, then zooming out toEarth’s orbit, the solar system, including the Moon, the Earth-Moon Lagrange points, the innersolar system, the asteroid belt, interstellar objects, the outer solar
Vidal, Clément +20 more
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A Calibrated Bayesian Search for Potential Chemical Technosignatures in Polluted White Dwarfs
The Astrophysical JournalWe present a meteorite-calibrated Bayesian framework for searching archival abundance records for chemical technosignatures —operationally, compositional patterns better explained by an idealized “processed” template (endmember) than by the empirical ...
Bo-Lun Huang +2 more
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Asymptotic burnout and homeostatic awakening: a possible solution to the Fermi paradox? [PDF]
J R Soc Interface, 2022 Wong ML, Bartlett S.
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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
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Using Anomaly Detection to Search for Technosignatures in Breakthrough Listen Observations
The Astronomical JournalWe implement a machine learning algorithm to search for extraterrestrial technosignatures in radio observations of several hundred nearby stars, obtained with the Parkes and Green Bank Telescopes by the Breakthrough Listen collaboration.
Snir Pardo +4 more
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A Deep SETI Search for Technosignatures in the TRAPPIST-1 System with FAST
The Astronomical JournalThe Five-hundred-meter Aperture Spherical Telescope (FAST) is the world’s largest single-dish radio telescope, and the search for extraterrestrial intelligence (SETI) is one of its five key science objectives.
Guang-Yuan Song +4 more
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The Challenge of Detecting Remote Spectroscopic Signatures from Radionuclides
The Astrophysical JournalThe characterization of exoplanetary atmospheres through transit spectra is becoming increasingly feasible, and technology for direct detection remains ongoing.
Jacob Haqq-Misra +2 more
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NASA has five robotic space probes on escape trajectories from the Solar System, and the Interstellar Probe concept was considered in the recent U.S. Solar & Space Physics Decadal Survey. While none of these robotic probes will be operational when they reach another star, it is natural to ask whether another civilization also might have sent out ...
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