Spectral flattening in active-region radio emission at 18-26 GHz signals an 89% probability of a strong solar flare within 30 hours, with only 12% of such flares missed despite weekly observations.
The radio properties of solar Active Region soft X-Ray transient brightenings
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Correlation between active regions' spectra at high radio frequencies and solar flare occurrences
Spectral flattening in active-region radio emission at 18-26 GHz signals an 89% probability of a strong solar flare within 30 hours, with only 12% of such flares missed despite weekly observations.