Solar dynamics over cycle 19 using sunspots as tracers.

Details Solar dynamics over cycle 19 using sunspots as tracers. Solar dynamics over cycle 19 using sunspots as tracers.

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...321..323n&link_type=abstract

Astronomy and Astrophysics, v.321, p.323-329

Astronomy and Astrophysics

Astrophysics

18

Sunspots, Sun: Rotation, Sun: Magnetic Fields, Sun: Activity

Scientific paper

The angular velocities and meridional motions of cycle 19 sunspots observed at Meudon were investigated. We compare our results with cycle 21 sunspot rotation properties (Nesme-Ribes et al. 1993A&A...274..563N). We found also a complex latitudinal meridional circulation pattern similar to what was observed on cycle 21 sunspots (Nesme-Ribes et al. 1993A&A...276..211N). We also corroborated the very small sunspot covariance (i.e. angular momentum transport via Reynolds stresses), which imposes a strong constraint on the source term of the differential rotation modeling.

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