The search for extraterrestrial intelligence (SETI) has traditionally focused on the detection of narrowband electromagnetic beacons.
radio
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Press Release, SETI & Technosignatures, Space Weather & Heliophysics
Why SETI Might Have Been Missing Alien Signals
A new study by researchers at the SETI Institute suggests stellar “space weather” could make radio signals from extraterrestrial intelligence harder to detect. Stellar activity and plasma turbulence near a […]
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Habitable Zones, Imaging & Spectroscopy, Intelligence & Language, Interstellar, SETI & Technosignatures, Status Report
Rotational Doppler Cartography Of Technosignatures On Unresolved Planets
The discovery of many Earth-like planets has renewed interest in whether life and technological civilizations exist elsewhere.
Posted inAstronomy & Telescopes, SETI & Technosignatures, Status Report
Simulating The Stellar Bycatch: Constraining The Prevalence Of Extraterrestrial Transmitters Within Radio SETI Surveys
Searches for radio technosignatures place constraints on the prevalence of extraterrestrial transmitters in our Galaxy and beyond. It is important to account for the complete stellar population captured within a […]
Posted inAstronomy & Telescopes, Intelligence & Language, Interstellar, SETI & Technosignatures, Status Report
Artificial Broadcasts as Galactic Populations: III. Constraints on Radio Broadcasts from the Cosmic Population of Inhabited Galaxies
Any population of artificial radio broadcasts in a galaxy contributes to its integrated radio luminosity.
Posted inAlpha Centauri, Astronomy & Telescopes, Barnard's Star, Biosignatures & Paleobiology, Intelligence & Language, SETI & Technosignatures, Status Report
Simulation Of The Earth’s Radio Leakage From Mobile Towers As Seen From Selected Nearby Stellar Systems
Mobile communication towers represent a relatively new but growing contributor to the total radio leakage associated with planet Earth.
Posted inArtemis & Lunar Exploration, Astronomy & Telescopes, Exploration Gear & Tech, Magnetic Fields, Electromagnetism, bioelectricity,, Missions & Hardware, Moon, SETI & Technosignatures, Status Report
Results from NASA’s First Radio Telescope on the Moon: Terrestrial Technosignatures and the Low-Frequency Galactic Background Observed by ROLSES-1 Onboard the Odysseus Lander
Radiowave Observations on the Lunar Surface of the photo-Electron Sheath instrument (ROLSES- 1) onboard the Intuitive Machines’ Odysseus lunar lander represents NASA’s first radio telescope on the Moon, and the […]
![Continuum noise power and FX complex correlator measurements, observed on MJD 60586, are presented together with the statistical power of 3.7 Hz bandwidth, 0.27 s duration polarized pulse pairs, recorded during the 123.8 day experiment. The high correlator response at 5.5 hr RA is due to the Orion A emission nebula at -5.4º DEC. [10][11]. Instrument delay difference of -82 ns between interferometer elements was compensated by choosing to display the -5 x 16 ns correlator tap. The bandwidth of the continuum and correlator measurements is approximately 50 MHz, at 0.27 s integration. The timedependent geometric space delay was not compensated, resulting in the approximate sawtooth phase response across RA, indicating a period of 0.117 hr RA. The prior pointing direction of interest indicates greater than 6 standard deviations Cohen’s d in the 5.1675 ± 0.00375 hr RA bin, within the prior range, 5.25 ± 0.15 hr RA. A second apparent response is indicated in two adjacent bins centered at 8.8425 hr RA, with apparent RA aliasing at ±0.12 hr RA. Figs. 2 and 3 show detail. -- eess.SP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/12/A-Signal-Discovery-Step-In-Interstellar.png?resize=1200%2C719&ssl=1)
Posted inAI - Data - Apps - Cybernetics, Apps - Games, Astronomy & Telescopes, Interstellar, Magnetic Fields, Electromagnetism, bioelectricity,, SETI & Technosignatures, Status Report
A Signal Discovery Step In Interstellar Communication
Prior work using synchronized, geographically spaced radio telescopes, and a radio interferometer, suggests that narrow-bandwidth polarized pulse pair measurements repeatedly falsify a noise-cause hypothesis, given a prior celestial direction of […]
Posted inAI - Data - Apps - Cybernetics, Astronomy & Telescopes, Intelligence & Language, Interstellar, SETI & Technosignatures, Status Report
Decoding Geometric Properties in Non-Random Data from First Information-Theoretic Principles
Based on the principles of information theory, measure theory, and theoretical computer science, we introduce a univariate signal deconvolution method with a wide range of applications to coding theory, particularly […]
Posted inAstronomy & Telescopes, Intelligence & Language, Interstellar, Magnetic Fields, Electromagnetism, bioelectricity,, SETI & Technosignatures, Status Report
Anomaly Detection and RFI Classification with Unsupervised Learning in Narrowband Radio Technosignature Searches
The search for radio technosignatures is an anomaly detection problem: candidate signals represent needles of interest in the proverbial haystack of radio-frequency interference (RFI).