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Microwave observations of solar flare-productive active regions of October-November 2003 by RATAN-600
Vladimir Bogod, Susanna Tokhchukova,
RATAN-600 microwave observations of the most powerful flare-productive solar active regions of October-November 2003 (AR 484, AR 486, AR 488) show sharp spectral inhomogeneities in
their polarized radio emission.
According to our earlier findings, such spectral-polarization
phenomena occur mostly in relatively narrow wavelengths band (2-5
cm). The peculiarities are specific for ARs producing most powerful
solar flares, so they could be a precursor for powerful coronal
mass ejections and high energy particle (proton) events, which
disturb the Earth magnetosphere on reaching.