Physics
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986soph..105..237c&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 105, June 1986, p. 237-255.
Physics
40
Solar Activity, Solar Magnetic Field, Spatial Distribution, Sunspots, Temporal Distribution, Histograms, Solar Longitude, Solar Rotation, Spectrum Analysis
Scientific paper
Sunspot activity is generally confined in relatively confined longitudinal and latitudinal areas, called sunspot nests, which evolve over a period of a month, last 6-21 solar revolutions, then decay over a month. Results are presented from a statistical analysis of sunspot data recorded in the Greenwich Photoheliographic Results from 1959-1964. Attention is given to the location and time of appearance of sunspots, the number of visibility days for the sunspots, the recurrence of particular groups, and possible connections of nest activity with solar magnetic activity. Up to 30 percent of all sunspots are contained within the nests. Finally, magnetic activity associated with nests may rotate at a different rate than a nest once the nest has stopped growing.
Castenmiller J. M. M.
van der Zalm B. J. E.
Zwaan Cornelis
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