Exo-IPM Scattering May Mask Narrowband Technosignatures, Explaining the Great Silence
To the point
Vishal Gajjar and Grayce C. Brown argue that narrow-band radio signals from alien technology could arrive on Earth already broadened and smeared by stellar winds and coronal mass ejections, causing current searches to miss them and implying future efforts must account for spectral broadening to explain the lack of detections.
