butterfly diagram


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butterfly diagram

n
(Astronomy) astronomy a graphical butterfly-shaped representation of the sunspot density on the solar disc in the 11-year sunspot cycle
References in periodicals archive ?
This relationship has generally been illustrated with the butterfly diagram, as shown in Figure 1.
It is obvious that the conventional butterfly diagram represents the computational relations between DFT bins and sub-DFT bins.
The usual butterfly diagram is plotted showing both northern and southern hemispheres separately.
This book contains more than 1,000 terms for observers and students, as well as a handful of illustrations for such concepts as the butterfly diagram of sunspot latitude throughout an 11-year cycle.