Results 41 to 50 of about 283 (144)

Time Markers for SETI in Binary Systems: History and Prospects

Astronomy
Contemporary surveys in the search for extraterrestrial intelligence (SETI) typically make one-off “spot scans” across the sky to search planetary systems for narrow-band radio signals that would indicate the presence of intelligent life.
Jacob Haqq-Misra
doaj   +1 more source

Signal Synchronization Strategies and Time Domain SETI with Gaia DR3

The Astronomical Journal, 2023
Spatiotemporal techniques for signal coordination with actively transmitting extraterrestrial civilizations, without the need for prior communication, can constrain technosignature searches to a significantly smaller coordinate space.
Andy Nilipour, James R. A. Davenport, Steve Croft, Andrew P. V. Siemion   +3 more
doaj   +1 more source

What is the noosphere? Planetary superorganism, major evolutionary transition and emergence

Systems Research and Behavioral Science, Volume 41, Issue 4, Page 614-622, July/August 2024.
Abstract The noosphere remains an underappreciated and understudied idea despite that it provides unique hope towards a positive and meaningful global integration. A core reason for this lack of attention is that its very definition is often unclear both in the West with Teilhard de Chardin and in the East with Vernadsky.
Clément Vidal
wiley   +1 more source

Real-time Technosignature Strategies with SN 2023ixf

Research Notes of the AAS, 2023
Abstract Several technosignature techniques focus on historic events such as SN 1987A as the basis to search for coordinated signal broadcasts from extraterrestrial agents. The recently discovered SN 2023ixf in the spiral galaxy M101 is the nearest Type II supernova in over a decade, and will serve as an important benchmark event.
James R. A. Davenport, Sofia Z. Sheikh, Wael Farah, Andy Nilipour, Bárbara Cabrales, Steve Croft, Alexander W. Pollak, Andrew P. V. Siemion   +7 more
openaire   +2 more sources

Astrophysical Technosignatures

, 2020
Our conventional SETI endeavors have focused on detecting artificial signs with communication techniques that are in everyday use in our present state of technical culture. These include the use of electromagnetic waves, i.e. radio, laser, and visible light communication techniques.
openaire   +1 more source

A Search for Technosignatures from TRAPPIST-1, LHS 1140, and 10 Planetary Systems in the Kepler Field with the Green Bank Telescope at 1.15–1.73 GHz [PDF]

, 2019
As part of our ongoing search for technosignatures, we collected over three terabytes of data in 2017 May with the L-band receiver (1.15–1.73 GHz) of the 100 m diameter Green Bank Telescope.
Xiao, Yinxue Yolanda, Schneck, Una, Ayalde, Thomas, Sayki, Bade, Pike, Ruth, Pinchuk, Pavlo, Tan, Aysen, Bloxham, Chad, Mizrahi, Inbal, Lynch, Ryan S, Rodger, Dominic, Cliffe, Micah, Hart, Kira, Boddu, Arjun, Hesford, Brayden, Greenberg, Adam H, Chinchilla-Garcia, Luis Gerardo, Gallagher, Sara, Margot, Jean-Luc   +18 more
core   +1 more source

Nine axes of merit for technosignature searches [PDF]

International Journal of Astrobiology, 2019
AbstractIt can be difficult to develop an effective and balanced search strategy in SETI, especially from a funding perspective, given the diverse methodologies and myriad orthogonal proposals for the best technosignatures. Here I propose a framework to compare the relative advantages and disadvantages of various proposed technosignatures based on nine
openaire   +2 more sources

A Search for Technosignatures from 14 Planetary Systems in the Kepler Field with the Green Bank Telescope at 1.15–1.73 GHz [PDF]

, 2018
Analysis of Kepler mission data suggests that the Milky Way includes billions of Earth-sized planets in the habitable zone of their host stars. Current technology enables the detection of technosignatures emitted from a large fraction of the Galaxy.
Akshay Shinde, Jean-Luc Margot, Adam H. Greenberg, Srinivas Prasad MN, Brittany Miles, Fisher, Callum, Pavlo Pinchuk, Raviprasad, Rashmi, Willow McKibbin, Jesse Santana, Shinde, Akshay, Lynch, Ryan S, McKibbin, Willow, Greenberg, Adam H, Ramani, Namrata, Callum Fisher, Alladi, Yashaswi, Power, Conor, MN, Srinivas Prasad, Pinchuk, Pavlo, Rashmi Raviprasad, Conor Power, Namrata Ramani, Miles, Brittany, M. Oliver Bowman, Donald Nguyen, Szilard Gyalay, Santana, Jesse, Bowman, M Oliver, Nguyen, Donald, Yashaswi Alladi, Ryan S. Lynch, Gyalay, Szilard, Margot, Jean-Luc   +33 more
core   +1 more source

A Machine Learning–based Direction-of-origin Filter for the Identification of Radio Frequency Interference in the Search for Technosignatures

, 2022
Radio frequency interference (RFI) mitigation remains a major challenge in the search for radio technosignatures. Typical mitigation strategies include a direction-of-origin (DoO) filter, where a signal is classified as RFI if it is detected in multiple ...
Pinchuk, Pavlo, Margot, Jean-Luc
core   +1 more source

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