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Rotation of the large-scale solar magnetic fields in the equatorial region

โœ Scribed by S. Latushko

Publisher
Springer
Year
1996
Tongue
English
Weight
325 KB
Volume
166
Category
Article
ISSN
0038-0938

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โœฆ Synopsis

A study is made of the rotation of large-scale magnetic fields using the synoptic maps from the Kitt Peak National Observatory for the time interval 1976-1985. The auto-correlation method and the mass-centers method of magnetic structures was applied to infer mean differential rotation profiles and rotation profiles separately for each magnetic field polarity. It has been found that in both hemispheres the leading polarity rotates faster than the following polarity at all latitudes by about 0.04 ~ day -1. The maximum rotation rate of the leading polarity is reached at about 6 ~ latitude. In the mean profile for both polarities, this brings about two angular velocity maxima at 6 ~ latitudes in both hemispheres. Such a profile appears as to have a 'dimple' on the equator.

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