Other
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spd....40.0602l&link_type=abstract
American Astronomical Society, SPD meeting #40, #6.02; Bulletin of the American Astronomical Society, Vol. 41, p.811
Other
Scientific paper
I investigate small-scale magnetic fields on the solar surface. In 1.2''-resolution magnetograms I find that features having an apparent unipolar origin are at least as important as bipolar ephemeral regions for introducing detectable flux into the photosphere. I infer this to be flux coalescence, and directly confirm this with recently-available 0.3''-resolution magnetograms. Observing flux coalescence in high-resolution magnetograms, I find that up to 50% of the flux within 3 Mm remains uncoalesced, detectable only in an ensemble average. Finally, I observe small-scale fields around supergranular network concentrations. Instead of showing a suppression of flux production as has been observed and simulated by others at smaller and larger scales, I find that the small-scale field usually traces the evolution of the much larger network concentration. These studies show the degree to which the formation and evolution of small-scale magnetic fields is intertwined with surface flows and magnetic fields on both smaller and larger scales.
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