Physics
Scientific paper
Sep 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982soph...80...15l&link_type=abstract
Solar Physics, vol. 80, Sept. 1982, p. 15-19
Physics
20
K Lines, Magnetic Flux, Magnetic Measurement, Solar Magnetic Field, Solar Spectra, Sunspot Cycle, Abundance, Calcium, Emission Spectra, Periodic Variations, Radiant Flux Density, Solar Activity Effects
Scientific paper
Direct magnetic measurements are used to confirm that the Ca II K line emission from the quiet sun network does not vary with the 11 year cycle (White and Livingston, 1981). As the K emission intensity is correlated with magnetic field strength, magnetic flux measurements are valid for comparison. Data were taken from the full-disk Mount Wilson daily magnetograms, and the aperture was decreased from 17.5 to 12.5 during the interval 1970 through 1980. Measurements are restricted to the latitude zones centered on + or - 1.7 degrees. The mean total flux in the + or - 15.3 degree zones increased by a factor of 10 between activity minimum and maximum, and the quiet sun flux shows no variation, thus confirming White and Livingston's (1981) result. In order for the amplitude of the quiet sun magnetic flux to remain constant, a balance between increasing and decreasing factors must exist, and the primary factor in this balance is the rate of destruction of the quiet sun flux.
Howard Ralph
LaBonte Barry J.
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