Physics
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991soph..134..233h&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 134, Aug. 1991, p. 233-246.
Physics
47
Lines Of Force, Magnetic Signatures, Photosphere, Solar Cycles, Solar Magnetic Field, Decay, Magnetic Field Configurations, Magnetic Flux
Scientific paper
East-west magnetic flux differences, interpreted as the component of magnetic field line inclination at the photospheric level in a plane parallel to the solar equator, are studied on the basis of magnetogram data. This component is determined by comparing average east-west pairs of flux values at equal distances from the central meridian. The average inclination of a whole region is such as to trail the rotation by about 1.9 deg. Leading and following portions (LFP) tilt toward each other by about 16 deg. Growing regions are strongly inclined to the west with large differences between LFP. Decaying regions are slightly inclined to the east with more normal differences between LFP. As the activity cycle progresses, the average inclination of the field lines of the following portions of regions varies from about 10 to 3 deg, and the average difference in inclination of the LFP of regions decreases monotonically during the cycle from nearly 20 to about 11 deg.
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