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Iras-allsky
Periodogram

Overview: A periodogram measures the variation of spectral frequency in a time series data set, and is one of the most powerful tools in extracting periodic signals from time-varying data sets.

A periodogram measures the variation of spectral frequency in a time series data set, and is one of the most powerful tools in extracting periodic signals from time-varying data sets. The periodogram tool developed at NStED returns three main products: the periodogram itself; a table of the peaks in the periodogram, with the associated probabilities that these peaks arise by chance; and light curves phased to these periods.