Stellar Space Weather May Blur Narrowband Technosignals, Reframing SETI Searches

To the point

Vishal Gajjar and Grayce C. Brown of the SETI Institute say space weather around stars can broaden and weaken ultra-narrow radio signals before they leave their system, making them harder to spot at Earth, and they argue that red dwarfs, being especially active, require adjusting detection thresholds and bandwidths to account for these distortions.

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Why no radio signals from aliens? Is space weather to blame?
earthsky.org

Why no radio signals from aliens? Is space weather to blame?

Vishal Gajjar and Grayce C. Brown propose that stellar space weather—solar winds, plasma turbulence, and coronal mass ejections—broadens and weakens narrowband technosignatures before they escape their star, leaving them blurred and harder to distinguish from natural broadband emissions by the time they reach Earth, which implies searches should adjust detection thresholds and bandwidths to account for such distortions and may help explain the persistent non-detections.