Hemispheric Helicity Trend for Solar Cycle 23

Details Hemispheric Helicity Trend for Solar Cycle 23 Hemispheric Helicity Trend for Solar Cycle 23

Mar 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apj...549l.261p&link_type=abstract

The Astrophysical Journal, Volume 549, Issue 2, pp. L261-L263.

Astronomy and Astrophysics

Astronomy

71

Sun: Activity, Sun: Corona, Sun: Magnetic Fields

Scientific paper

Applying the same methods we used in solar cycle 22, we study active region vector magnetograms, full-disk X-ray images, and full-disk line-of-sight magnetograms to derive the helicity of solar magnetic fields in the first 4 years of solar cycle 23. We find that these three data sets all exhibit the same two key tendencies-significant scatter and weak hemispheric asymmetry-as were observed in solar cycle 22. This supports the interpretation of these tendencies as signatures of the writhing of magnetic flux by turbulence in the convection zone.

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