nifty-ls: Fast and Accurate Lomb–Scargle Periodograms Using a Non-uniform FFT

nifty-ls: Fast and Accurate Lomb–Scargle Periodograms Using a Non-uniform FFT

We present nifty-ls , a software package for fast and accurate evaluation of the Lomb–Scargle periodogram. nifty-ls leverages the fact that Lomb–Scargle can be computed using a non-uniform fast Fourier transform (NUFFT), which we evaluate with the Flatiron Institute NUFFT package ( finufft ). This a...

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Veröffentlicht in:Research notes of the AAS 2024-10, Vol.8 (10), p.250
Hauptverfasser: Garrison, Lehman H., Foreman-Mackey, Dan, Shih, Yu-hsuan, Barnett, Alex
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Astronomy software
GPU computing
Lomb-Scargle periodogram
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container_issue 10
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container_title Research notes of the AAS
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creator Garrison, Lehman H.
Foreman-Mackey, Dan
Shih, Yu-hsuan
Barnett, Alex
description We present nifty-ls , a software package for fast and accurate evaluation of the Lomb–Scargle periodogram. nifty-ls leverages the fact that Lomb–Scargle can be computed using a non-uniform fast Fourier transform (NUFFT), which we evaluate with the Flatiron Institute NUFFT package ( finufft ). This approach achieves a many-fold speedup over the Press & Rybicki method as implemented in Astropy and is simultaneously many orders of magnitude more accurate. nifty-ls also supports fast evaluation on GPUs via CUDA and integrates with the Astropy Lomb–Scargle interface. nifty-ls is publicly available at https://github.com/flatironinstitute/nifty-ls/ .
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Lomb-Scargle periodogram
title nifty-ls: Fast and Accurate Lomb–Scargle Periodograms Using a Non-uniform FFT
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