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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2409.08090 |
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| _version_ | 1866912024920850432 |
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| author | Garrison, Lehman H. Foreman-Mackey, Dan Shih, Yu-hsuan Barnett, Alex |
| author_facet | Garrison, Lehman H. Foreman-Mackey, Dan Shih, Yu-hsuan Barnett, Alex |
| contents | 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 FFT (NUFFT), which we evaluate with the Flatiron Institute NUFFT package (finufft). This approach achieves a many-fold speedup over the Press & Rybicki (1989) 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 as open-source software. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_08090 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | nifty-ls: Fast and Accurate Lomb-Scargle Periodograms Using a Non-Uniform FFT Garrison, Lehman H. Foreman-Mackey, Dan Shih, Yu-hsuan Barnett, Alex Instrumentation and Methods for Astrophysics 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 FFT (NUFFT), which we evaluate with the Flatiron Institute NUFFT package (finufft). This approach achieves a many-fold speedup over the Press & Rybicki (1989) 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 as open-source software. |
| title | nifty-ls: Fast and Accurate Lomb-Scargle Periodograms Using a Non-Uniform FFT |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2409.08090 |