
doi: 10.1086/166443
Two-frequency VLA observations of the quiet sun were obtained on July 13, 1985. Although the 4.9 GHz full-day synthesis maps correspond closely to images made in H-alpha, Ca II K, and magnetograms, the correspondence is much less apparent on shorter time scale maps, and it is suggested that the discrepancy is due to nearly continual variations in the individual radio sources. This correspondence is also much reduced at 1.45 GHz. Videomagnetograms of the fields show temporal changes in longitudinal magnetic fields which are accompanied by minor radio brightening. Several ephemeral regions noted in the field are not associated with especially bright radio emission during any part of their lifetime. 24 references.
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