Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...210..403s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 210, no. 1-2, Feb. 1989, p. 403-409.
Astronomy and Astrophysics
Astrophysics
71
Rotating Environments, Solar Interior, Stellar Magnetic Fields, Angular Velocity, Autocorrelation, Convection, Helioseismology, Magnetic Flux, Solar Rotation
Scientific paper
The sun's differential rotation is determined, using the pattern of solar magnetic fields as a tracer. An autocorrelation analysis on a 26-yr synoptic data set of magnetic fields sampled at the sun's central meridian produces a differential rotation law that is well-determined all the way to the poles of the sun. This law is very different from that derived from cross-correlation analysis of flux patterns in daily magnetograms by Snodgrass (1983). It is suggested that the differences may be explained if the surface magnetic flux is constantly being replenished over a time scale of weeks by new flux emitted from the source region, which is probably near the bottom of the convection zone.
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