Results 21 to 30 of about 466 (181)

The Most Sensitive SETI Observations Toward Barnard's Star with FAST

The Astronomical Journal, 2023
Search for extraterrestrial intelligence (SETI) has been mainly focused on nearby stars and their planets in recent years. Barnard’s star is the second closest star system to the Sun and the closest star in the Five-hundred-meter Aperture Spherical radio
Zhen-Zhao Tao, Bo-Lun Huang, Xiao-Hang Luan, Jian-Kang Li, Hai-Chen Zhao, Hong-Feng Wang, Tong-Jie Zhang   +6 more
doaj   +1 more source

A 4–8 GHz Galactic Center Search for Periodic Technosignatures

The Astronomical Journal, 2023
Radio searches for extraterrestrial intelligence have mainly targeted the discovery of narrowband continuous-wave beacons and artificially dispersed broadband bursts.
Akshay Suresh, Vishal Gajjar, Pranav Nagarajan, Sofia Z. Sheikh, Andrew P. V. Siemion, Matt Lebofsky, David H. E. MacMahon, Danny C. Price, Steve Croft   +8 more
doaj   +1 more source

Biosemiotic knowledge — a prerequisite for valid explorations of extraterrestrial intelligent life

Sign Systems Studies, 2002
The scientific search for extraterrestrial intelligent life is probably one of the most ambitious projects ever taken in biology. The article discusses methodological problems associated with the search.
Elling Ulvestad
doaj   +1 more source

The Search for Extraterrestrial Intelligence

Journal of Student Research
Based on the following topic, I hope to share some of my personal perspectives and ideas. This is also a key topic I am researching during this summer period, and I will elaborate on my thoughts through a detailed article. Topic: S.E.T.I, the search for extraterrestrial intelligence.
Francis Lyall, Paul B. Larsen
  +4 more sources

A Deep SETI Search for Technosignatures in the TRAPPIST-1 System with FAST

The Astronomical Journal
The 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, Zhen-Zhao Tao, Bo-Lun Huang, Bo Yu, Tong-Jie Zhang   +4 more
doaj   +1 more source

Application of the Thermodynamics of Radiation to Dyson Spheres as Work Extractors and Computational Engines and Their Observational Consequences

The Astrophysical Journal, 2023
I apply the thermodynamics of radiation to Dyson spheres as machines that do work or computation and examine their observational consequences. I identify four properties of Dyson spheres that complicate typical analyses: globally, they may do no work in ...
Jason T. Wright
doaj   +1 more source

Flexible Sensors for Robotics Tactile Perception: A Review

Advanced Robotics Research, EarlyView.
Flexible tactile sensing for robotics is reviewed through four interconnected dimensions. Physical mechanisms include piezoresistive, capacitive, piezoelectric, triboelectric, iontronic, and optical sensing. Structural design includes bioinspired, defect‐based, and MEMS‐based tactile systems.
Yu Song, Ying Chen, Yihao Chen, Xue Feng
wiley   +1 more source

The Local Galactic Transient Survey Applied to an Optical Search for Directed Intelligence

The Astrophysical Journal
We discuss our transient search for directed energy systems in local galaxies, with calculations indicating the ability of modest searches to detect optical Search for Extraterrestrial Intelligence sources in the closest galaxies. Our analysis follows P.
Alex Thomas, Natalie LeBaron, Luca Angeleri, Phillip Morgan, Varun Iyer, Prerana Kottapalli, Enda Mao, Samuel Whitebook, Jasper Webb, Dharv Patel, Rachel Darlinger, Kyle Lam, Kelvin Yip, Michael McDonald, Robby Odum, Cole Slenkovich, Yael Brynjegard-Bialik, Nicole Efstathiu, Joshua Perkins, Ryan Kuo, Audrey O’Malley, Alec Wang, Ben Fogiel, Sam Salters, Marlon Munoz, Natalie Kim, Lee Fowler, Ruiyang Wang, Philip Lubin   +28 more
doaj   +1 more source

Hexapod Locomotion Across Structured and Unstructured Terrains: A Data‐Driven Review of Modeling, Control, and Validation

Journal of Field Robotics, EarlyView.
ABSTRACT The design of a hexapod is complex and requires integration between kinematic models, control systems, and sensing. Existing literature has reviewed these sub‐systems in isolation. Since 2021, there has been no review of the field despite significant advancements in soft soil, lunar traversal, and artificial intelligence.
Akhil Rampersad, Bashan Naidoo
wiley   +1 more source

Using Anomaly Detection to Search for Technosignatures in Breakthrough Listen Observations

The Astronomical Journal
We 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, Dovi Poznanski, Steve Croft, Andrew P. V. Siemion, Matthew Lebofsky   +4 more
doaj   +1 more source