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[ascl:1807.019] GLS: Generalized Lomb-Scargle periodogram

The Lomb-Scargle periodogram is a common tool in the frequency analysis of unequally spaced data equivalent to least-squares fitting of sine waves. GLS is a solution for the generalization to a full sine wave fit, including an offset and weights (χ2 fitting). Compared to the Lomb-Scargle periodogram, GLS is superior as it provides more accurate frequencies, is less susceptible to aliasing, and gives a much better determination of the spectral intensity.

Code site:
http://www.astro.physik.uni-goettingen.de/%7Ezechmeister/gls.php
Appears in:
http://adsabs.harvard.edu/abs/2009A%26A...496..577Z
Bibcode:
2018ascl.soft07019Z

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ascl:1807.019
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