Results 71 to 80 of about 434 (179)

An Improved Machine Learning Approach for Radio Frequency Interference Mitigation in FAST–SETI Survey Archival Data

The Astronomical Journal
The search for extraterrestrial intelligence (SETI) commensal surveys aim to scan the sky to detect technosignatures from extraterrestrial life. A major challenge in SETI is the effective mitigation of radio frequency interference (RFI), a critical step ...
Li-Li Zhao, Xiao-Hang Luan, Xin Chao, Yu-Chen Wang, Jian-Kang Li, Zhen-Zhao Tao, Tong-Jie Zhang, Hong-Feng Wang, Dan Werthimer   +8 more
doaj   +1 more source

SETI@home: Data Analysis and Findings

The Astronomical Journal
SETI@home is a radio Search for Extraterrestrial Intelligence (SETI) project that looks for technosignatures in data recorded at the Arecibo Observatory.
David P. Anderson, Eric J. Korpela, Dan Werthimer, Jeff Cobb, Bruce Allen   +4 more
doaj   +1 more source

Ground to Dust: Collisional Cascades and the Fate of Kardashev II Megaswarms

The Astrophysical Journal
Extraterrestrial intelligences are speculated to surround stars with structures to collect their energy or to signal distant observers. If they exist, these most likely are megaswarms, vast constellations of satellites (elements) in orbit around the ...
Brian C. Lacki
doaj   +1 more source

Projections of Earth’s Technosphere: Strategies for Observing Technosignatures on Terrestrial Exoplanets

The Astrophysical Journal Letters
The search for technosignatures—remotely detectable evidence of extraterrestrial technology—draws upon examples from the recent history of Earth as well as projections of Earth’s technosphere.
Jacob Haqq-Misra, Ravi K. Kopparapu, George Profitiliotis   +2 more
doaj   +1 more source

All-sky Ultra-narrowband Spectral Imaging with the OVRO–LWA: Technosignature Constraints and Axion-like Particle Prospects

The Astronomical Journal
We present an imaging-domain search for technosignatures at decametric wavelengths with the Owens Valley Radio Observatory Long Wavelength Array, targeting ultra-narrowband continuous-wave signals between 50 and 86 MHz.
Nikita Kosogorov, Gregg Hallinan, Greg Hellbourg, Marin M. Anderson, Judd D. Bowman, Ruby Byrne, Morgan Catha, Bin Chen, Xingyao Chen, Sherry Chhabra, Larry D’Addario, Ivey Davis, Jayce Dowell, Katherine Elder, Dale Gary, Charlie Harnach, Jack Hickish, Rick Hobbs, David Hodge, Mark Hodges, Yuping Huang, Andrea Isella, Daniel C. Jacobs, Ghislain Kemby, John T. Klinefelter, Matthew Kolopanis, James Lamb, Casey Law, Nivedita Mahesh, Surajit Mondal, Brian O’Donnell, Kathryn Plant, Corey Posner, Travis Powell, Vinand Prayag, Andres Rizo, Andrew Romero-Wolf, Jun Shi, Greg Taylor, Jordan Trim, Mike Virgin, Akshatha Vydula, Sandy Weinreb, Scott White, David Woody, Sijie Yu, Thomas Zentmeyer, Peijin Zhang, T. Joseph W. Lazio   +48 more
doaj   +1 more source

Phase-space Crystallization in Galactic Globular Clusters: A Gaia-based Metric and Implications for Technosignature Searches

The Astrophysical Journal
We develop a model-independent framework to quantify phase-space “crystallization,” the degree of ordered radial and kinematic substructure, in 79 Galactic globular clusters using the Gaia EDR3–based membership catalog of E. Vasiliev & H. Baumgardt.
Bo-Lun Huang, Zhen-Zhao Tao, Tong-Jie Zhang   +2 more
doaj   +1 more source

Searching the SN 1987A SETI Ellipsoid with TESS

The Astronomical Journal
The SETI Ellipsoid is a strategy for technosignature candidate selection that assumes that extraterrestrial civilizations who have observed a galactic-scale event—such as supernova 1987A—may use it as a Schelling point to broadcast synchronized signals ...
Bárbara Cabrales, James R. A. Davenport, Sofia Sheikh, Steve Croft, Andrew P. V. Siemion, Daniel Giles, Ann Marie Cody   +6 more
doaj   +1 more source

In Space, No-One Can Hear the Screams of Paternalism: A Response to Häyry's Immorality of Space Exploration. [PDF]

Bioethics
Firth SJ.
europepmc   +1 more source

Artificial intelligence hallucinations. [PDF]

Crit Care, 2023
Salvagno M, Taccone FS, Gerli AG.
europepmc   +1 more source

Searching for Extraterrestrial Intelligence [PDF]

, 2011
openaire   +1 more source