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2009ApJ...695..496P - Astrophys. J., 695, 496-502 (2009/April-2)
A fast chi-squared technique for period search of irregularly sampled data.
PALMER D.M.
Abstract (from CDS):
A new, computationally and statistically efficient algorithm, the Fast χ2 algorithm (Fχ2), can find a periodic signal with harmonic content in irregularly sampled data with nonuniform errors. The algorithm calculates the minimized χ2 as a function of frequency at the desired number of harmonics, using fast Fourier transforms to provide O(Nlog N) performance. The code for a reference implementation is provided.
Abstract Copyright: ∼
Journal keyword(s): methods: data analysis - methods: numerical - methods: statistical - stars: oscillations
Simbad objects: 7
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