Differential rotation of solar background magnetic fields during the 20th solar cycle

Details Differential rotation of solar background magnetic fields during the 20th solar cycle Differential rotation of solar background magnetic fields during the 20th solar cycle

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983esasp.201..103h&link_type=abstract

In ESA Statist. Methods in Astron. p 103-108 (SEE N84-19196 09-89)

Astronomy and Astrophysics

Astronomy

1

Rotation, Solar Magnetic Field, Time Series Analysis, Angular Velocity, Autocorrelation, Periodic Variations, Solar Cycles

Scientific paper

The study demonstrates the possibility of using the autocorrelation analysis for studies of the differential rotation of the solar background magnetic fields. For that purpose the time series obtained from the synoptic Hα charts published by McIntosh were subjected to an analysis. On their basis the distribution of the synodic angular velocity in time - during the cycle - and in the heliographic latitude - for |φ| smaller than 60° - was determined. After that the parameters A and B from the relation for differential rotation ω = A+B sin2φ could be determined, both for the entire cycle and for individual Carrington rotations.

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