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The cleanest Fourier spectrum

1995; Institute of Physics; Volume: 109; Linguagem: Inglês

10.1086/117416

1538-3881

Grant Foster,

Advanced MEMS and NEMS Technologies

view Abstract Citations (210) References (11) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Cleanest Fourier Spectrum Foster, Grant Abstract A new method of removing false peaks from a power spectrum is introduced, the CLEANest algorithm, together with several variations on the theme. It is shown to be an effective technique for detecting and describing multiperiodic signals, and at least in some cases is capable of divining the true nature of a multiperiodic signal, even when the single strongest peak in a periodogram occurs at a spurious frequency. The method is capable of describing long-term time evolution of period and amplitude. These techniques are applied to artificial test data, and to visual observations of variable stars from the International Database of the American Association of Variable Star Observers (AAVSO). Publication: The Astronomical Journal Pub Date: April 1995 DOI: 10.1086/117416 Bibcode: 1995AJ....109.1889F Keywords: Algorithms; Fourier Analysis; Light Curve; Periodic Variations; Pulse Amplitude; Variable Stars; Astronomical Spectroscopy; Spectrum Analysis; Astronomy; METHODS: ANALYTICAL full text sources ADS | data products SIMBAD (3)