Physics
Scientific paper
Jan 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995soph..156...29h&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 156, no. 1, p. 29-39
Physics
3
Inclination, Latitude, Magnetic Field Configurations, Solar Magnetic Field, Solar Physics, Equatorial Regions, Northern Hemisphere, Solar Cycles, Southern Hemisphere
Scientific paper
It is shown that leading and following magnetic field lines are inclined toward each other by a few degrees at nearly all latitudes in both the north and south hemispheres. The amplitudes of these inclinations are lower by about a factor 3 for weak fields than for strong fields. There are significant differences between the hemispheres and from one activity cycle to the next in the leading and following polarity field-line inclinations at latitudes poleward of the activity latitudes. In a narrow latitude zone just south of the solar equator the inclinations of both the leading and following fields reduce to zero (or perhaps slightly negative values). Although one would expect such a zone at the equator, where diffusion will mix with field lines with opposite inclinations from the two hemispheres, it is not clear why this zone should be on one side of the equator only. The results discussed here were obtained with Mount Wilson magnetograph data (1967-1992), and are confirmed in many respects with National Solar Observatory/Kitt Peak (NSO/KP) data (1976-1986).
Howard Robert F.
Stanchfield Donald H. II
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