Quantifying Stellar Space-Weather Broadening of Technosignature Radio Signals: Implications for SETI Searches

To the point

Vishal Gajjar and Grayce C. Brown devised a practical method to predict how stellar activity and turbulent plasma widen radio signals that could carry technosignatures, using solar-system data to calibrate and then applying it to various stars; their result shows active stars, especially M-dwarfs, are more likely to smear signals, so searches should tolerate broader signals and tailor target selection and search design, though this doesn’t prove why we see radio silence.