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- W2002198136 abstract "The rotation of solar magnetic fields for the current solar cycle 24 is investigated through a cross-correlation analysis of the Carrington synoptic maps of solar photospheric magnetic fields during Carrington rotation numbers 2076-2146 (2008 October to 2014 January). The sidereal rotation rates of positive and negative magnetic fields at some latitudes are shown, and it can be found that the positive (negative) fields generally rotate faster than the negative (positive) fields in the southern (northern) hemisphere at low latitudes. The mean rotation profiles of total, positive, and negative magnetic fields between +/- 60 degrees latitudes in the time interval are also obtained. It should be noted that both of the mean rotation profiles of the positive and negative magnetic fields, as well as the mean rotation profile of the total magnetic field, exhibit a quasi-rigid rotation at latitudes above about 55 degrees. The mean rotation rates of the positive (negative) polarity reach their maximum values at about 9 degrees(6)degrees latitude in the southern (northern) hemisphere. The mean rotation profile of the total magnetic field displays an obvious north-south asymmetry, where the rotation seems to be more differential in the northern hemisphere. The latitude variation in the rotation rate differences between positive and negative magnetic fields is further studied, and it is found that magnetic fields with the same polarity as the leading sunspots at a given hemisphere rotate faster than those with the opposite polarity, except for the zones around 52 degrees latitude of the southern hemisphere and around 35 degrees latitude of the northern hemisphere. The implication of these results is discussed. It is clear that the obtained results can provide some observational constraints on the theoretical research of the mechanisms of differential rotation and solar cycle." @default.
- W2002198136 created "2016-06-24" @default.
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- W2002198136 date "2014-10-17" @default.
- W2002198136 modified "2023-10-16" @default.
- W2002198136 title "ROTATION OF SOLAR MAGNETIC FIELDS FOR THE CURRENT SOLAR CYCLE 24" @default.
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- W2002198136 doi "https://doi.org/10.1088/0004-6256/148/5/101" @default.
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