A Fast Chi-squared Technique For Period Search of Irregularly Sampled Data

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dc.creatorPalmer, David M.
dc.date2009-01-14
dc.date.accessioned2026-07-07T13:04:51Z
dc.date.available2026-07-07T13:04:51Z
dc.descriptionA new, computationally- and statistically-efficient algorithm, the Fast $χ^2$ algorithm, can find a periodic signal with harmonic content in irregularly-sampled data with non-uniform errors. The algorithm calculates the minimized $χ^2$ as a function of frequency at the desired number of harmonics, using Fast Fourier Transforms to provide $O (N \log N)$ performance. The code for a reference implementation is provided.
dc.descriptionSource code for the reference implementation is available at http://public.lanl.gov/palmer/fastchi.html . Accepted by ApJ. 24 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0901.1913
dc.identifierhttp://arxiv.org/abs/0901.1913
dc.identifierAstrophys.J.695:496-502,2009
dc.identifierdoi:10.1088/0004-637X/695/1/496
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/227314
dc.subjectData Analysis, Statistics and Probability
dc.subjectInstrumentation and Methods for Astrophysics
dc.titleA Fast Chi-squared Technique For Period Search of Irregularly Sampled Data
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