Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ap.....54..593g&link_type=abstract
Astrophysics, Volume 54, Issue 4, pp.593-602
Astronomy and Astrophysics
Astrophysics
Solar Rotation, Hα, Filaments, Compact Magnetic Features
Scientific paper
The time variation and latitude dependence of the solar rotation are found using observational data on Hα filaments and compact magnetic features with different polarities during solar activity cycles 20 and 21 (1966-1985). Statistical analysis of the observational data shows that there is a north-south asymmetry in the rotation, both for the Hα filaments and for compact magnetic features (structures) with negative and positive polarities. The N-S asymmetry in the differential rotation of the Hα filaments and the compact magnetic features with both polarities shows up quite distinctly in solar activity cycles 20 and 21, but the asymmetry for the compact magnetic features with positive polarity is comparatively lower in cycle 21. The confidence level is lower the compact magnetic features with positive polarity than for the compact magnetic features with negative polarity.
Gigolashvili Sh. M.
Japaridze D. R.
Mdzinarishvili T. G.
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