Comparisons Of Power Spectrums Of Artificial Time Series With Spectrum Of A Plage Index

A number of experiments are described whose purpose was to determine whether peaks in power spectrums of time series of solar indices reflect a tendency for equidistant separation in longitude of solar active regions or are produced by the analysis technique. From comparisons of power spectrums of artificial time series with the spectrum of a solar plage index it is clear that there is no appreciable tendency for equidistant spacing of active regions. (Author).

The bibliography of AFCRL in-house technical reports lists all reports issued in the existing series. In addition, appendices list reports issued from 1962 to 1964 when series designations were not used, and reports issued in now-defunct series.