Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986basi...14..163m&link_type=abstract
Astronomical Society of India, Bulletin, vol. 14, Sept. 1986, p. 163-167.
Astronomy and Astrophysics
Astronomy
6
Magnetic Field Inversions, Polar Regions, Polarization (Spin Alignment), Solar Cycles, Solar Magnetic Field, Solar Prominences, Magnetic Field Configurations, Plasma Currents, Solar Activity, Vortex Filaments
Scientific paper
The H-alpha synoptic charts for the 1904-1982 period and data on the polar prominences for the 1870-1905 period are used to investigate the polarity reversal of the polar magnetic field on the sun for 11 solar cycles. Good agreement is found between polarity reversals obtained from the drift trajectory of the neutral line and those from magnetograph observations. A three-fold polarity reversal of the sun's magnetic field was found in the 12th and 14th solar cycles in the southern hemisphere, and in the 16th, 19th and 20th solar cycles in the northern hemisphere. It is noted that the filament bands in the two hemispheres do not reach the respective poles simultaneously.
Makarov Valentin I.
Sivaraman K. R.
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