Other
Scientific paper
Oct 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jrasc..70..228s&link_type=abstract
Journal of the Royal Astronomical Society of Canada, vol. 70, Oct. 1976, p. 228-237.
Other
1
Microwaves, Radiant Flux Density, Radio Attenuation, Solar Activity, Solar Radio Emission, Atmospheric Attenuation, Solar Activity Effects, Solar Prominences, Tables (Data)
Scientific paper
East-limb passage of an activity complex in the spring of 1974 was accompanied by a remarkable series of microwave flux decreases. Within an interval of four days, two post-burst decreases and five 'absorption' events occurred, along with two oscillations. H-alpha patrol films and a spectrogram show a surge and flare sprays with an unusually large velocity of approach at the time of the first post-burst decrease. Two other 'absorption' events were loosely associated with prominence activations, but no outstanding H-alpha activity was seen at the time of the oscillations. These observations, along with published data, show that the flux decreases followed only flares that lay westward of the major microwave source; ejections from this location would likely have overlain the source while the region was near the east limb. Absorption by flare-ejected material is a plausible, though not exclusive, explanation of these events.
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