Stellar Space Weather Broadens Ultra-Narrow Signals, Complicating SETI Searches Around M-Dwarfs
To the point
SETI Institute researchers led by Vishal Gajjar, with Grayce C. Brown, show that plasma around stars can smear ultra-narrow radio signals from distant intelligences by spreading their power across frequencies, making them harder to detect with traditional searches, especially around M-dwarfs, and they built a framework to predict this broadening for different stars and observing frequencies to improve searches.
