期刊
PHYSICAL REVIEW D
卷 106, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.106.122001
关键词
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资金
- Schmidt Futures foundation
- Netherlands eScience Center [638-2013-8993]
- Vetenskapsradet (Swedish Research Council) [DE-SC0022021]
- Oskar Klein Centre for Cosmoparticle Physics
- Rubicon Fellowship awarded by the Netherlands Organisation for Scientific Research (NWO)
- Jeff & Gail Kodosky Endowed Chair in Physics at the University of Texas at Austin
- U.S. Department of Energy, Office of Science, Office of High Energy Physics program [PHY-1912578]
- NSF [864035]
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program
- NSF's LIGO Laboratory - National Science Foundation
- Calcul Quebec
- Digital Research Alliance of Canada
- Digital Research Alliance of Canada
- [ETEC.2019.018]
This study proposes a new method for generating template banks using automatic differentiation and demonstrates its efficiency and accuracy. By combining random template placement and Monte Carlo methods, search-ready template banks for frequency-domain waveforms can be rapidly generated. The study also suggests that differentiable waveforms can accelerate stochastic placement algorithms.
The most sensitive search pipelines for gravitational waves from compact binary mergers use matched filters to extract signals from the noisy data stream coming from gravitational wave detectors. Matched-filter searches require banks of template waveforms covering the physical parameter space of the binary system. Unfortunately, template bank construction can be a time-consuming task. Here we present a new method for efficiently generating template banks that utilizes automatic differentiation to calculate the parameter space metric. Principally, we demonstrate that automatic differentiation enables accurate computation of the metric for waveforms currently used in search pipelines, whilst being computationally cheap. Additionally, by combining random template placement and a Monte Carlo method for evaluating the fraction of the parameter space that is currently covered, we show that search-ready template banks for frequency-domain waveforms can be rapidly generated. Finally, we argue that differentiable waveforms offer a pathway to accelerating stochastic placement algorithms. We implement all our methods into an easy-to-use PYTHON package based on the JAX framework, diffbank, to allow the community to easily take advantage of differentiable waveforms for future searches.
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