Null detection of 0.3-micron artificial grains in 1 m³ lunar regolith excludes Solar-type stars dispersing more than ~0.09 Earth masses of long-lived technomaterial over Galactic history.
Physics Today , year = 1961, month = jan, volume =
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No extraterrestrial technosignatures detected in an all-sky ultra-narrowband imaging survey at 50-86 MHz with OVRO-LWA, achieving ~100 Jy sensitivity and EIRP limits of 10^14 W at 10 pc.
A wavelet-integrated pipeline with MSWNet recovers prior narrowband events and yields new veto-ready candidates in FAST observations of 33 exoplanet systems.
First observational test of the hybrid ring technosignature strategy with GRB 221009A and TESS data identifies no credible signals but validates the method's feasibility for future searches.
A tiered observational strategy is outlined to identify planetary-scale broadband radio technosignatures (BRaTs) from advanced civilizations up to 100 pc away using multi-parameter diagnostics to separate them from natural signals.
Civilizations can achieve galaxy-spanning reach within biological lifetimes via time-dilated orbits near black hole photon spheres using classical general relativity, with a Type II civilization enabling 10^4 dilation factors.
Overview of synergies between SKA radio observations and gamma-ray facilities for studying transient, variable, and steady GeV-TeV sources.
The SKA is described as a key future tool for technosignature searches due to its sensitivity, field of view, and resolution, requiring high temporal and spectral resolution data products.
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