Results 21 to 30 of about 588 (145)
On Detecting Interstellar Scintillation in Narrowband Radio SETI
The Astrophysical Journal, 2023 To date, the search for radio technosignatures has focused on sky location as a primary discriminant between technosignature candidates and anthropogenic radio frequency interference (RFI).
Bryan Brzycki +6 more
doaj +1 more source
The Astronomical Journal, 2023 The primary goal of the search for extraterrestrial intelligence is to gain an understanding of the prevalence of technologically advanced beings (organic or inorganic) in the Galaxy.
C. D. Tremblay +16 more
doaj +1 more source
The Resilience of Habitable Climates Around Circumbinary Stars
Journal of Geophysical Research: Planets, Volume 125, Issue 9, September 2020., 2020 Abstract Here we use a 3‐D climate system model to study the habitability of Earth‐like planets orbiting in circumbinary systems. In the most extreme cases, Earth‐like planets in circumbinary systems could experience variations in the incident stellar flux of up to ~50% on ~100‐day timescales.
Eric T. Wolf +7 more
wiley +1 more source
A Simultaneous Dual-site Technosignature Search Using International LOFAR Stations
The Astronomical Journal, 2023 The Search for Extraterrestrial Intelligence aims to find evidence of technosignatures, which can point toward the possible existence of technologically advanced extraterrestrial life. Radio signals similar to those engineered on Earth may be transmitted
Owen A. Johnson +21 more
doaj +1 more source
Panoramic optical and near-infrared SETI instrument: optical and structural design concepts [PDF]
, 2018 We propose a novel instrument design to greatly expand the current optical and near-infrared SETI search parameter space by monitoring the entire observable sky during all observable time.
Ackermann +16 more
core +2 more sources
, 2020 Technosignatures can represent a sign of technology that may infer the existence of intelligent life elsewhere in the universe. This had usually meant searches for extraterrestrial intelligence using narrow-band radio signals or pulsed lasers. Back in 1960 Freeman Dyson put forward the idea that advanced civilizations may construct large structures in ...
Jackson, A. A., Benford, Gregory
openaire +2 more sources
Demography of galactic technosignatures [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT Probabilistic arguments about the existence of technological life beyond Earth traditionally refer to the Drake equation to draw possible estimates of the number of technologically advanced civilizations releasing, either intentionally or not, electromagnetic emissions in the Milky Way.
openaire +3 more sources
Persistence of Technosignatures: A Comment on Lingam and Loeb [PDF]
Astrobiology, 2019 In a recent article in this journal, Lingam and Loeb developed an excellent heuristic for searches for biosignatures versus technosignatures. We consider two ways in which their approach could be extended and sharpened, with focus on durability of technosignatures.
Ćirković, Milan M. +2 more
openaire +3 more sources
Propulsion of Spacecrafts to Relativistic Speeds Using Natural Astrophysical Sources
, 2020 In this paper, we explore from a conceptual standpoint the possibility of using natural astrophysical sources to accelerate spacecrafts to relativistic speeds.
Lingam, Manasvi, Loeb, Abraham
core +1 more source
Inferring the Rate of Technosignatures from 60 yr of Nondetection
The Astronomical Journal, 2023 For about the last 60 yr the search for extraterrestrial intelligence has been monitoring the sky for evidence of remotely detectable technological life beyond Earth, with no positive results to date.
Claudio Grimaldi
doaj +1 more source