Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.506..837b&link_type=abstract
In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9 - 14 September 2002, Prague, Cze
Physics
Solar Cycles: Short-Term Activity
Scientific paper
We study the regularities in the development of solar activity in the course of four cycles with the smallest activity (Nos. 13-16). On the daily sums of sunspot areas we investigate the frequency of occurrence and time intervals between the impulses of solar activity, and their clusters, recalling packages of coupled waves. We also study the real situation in activity on the solar surface. Most striking is the repetition, after many years, of long-lasting segments of daily area curves with the same time sequence and amplitude distribution of activity peaks, and their packages. The lengths of the time intervals between the peaks and minima of activity are clustered around several discrete values. The same regularities yield the correlation of the most characteristic packages of impulses with similarly formed features of the whole cycle. Searching for the reasons of the found regularities, we found certain indication of relation betwen the longitudinal distribution of solar activity and conjunctions of the first three planets of the solar system.
Bumba Vaclav
Garcia Arnaldo
Klvana Mirek
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