arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2305.09702astro-ph.IMgr-qc
收藏

LISA的端到端模拟与分析流水线

End-to-end simulation and analysis pipeline for LISA

Jean-Baptiste Bayle, Olaf Hartwig, Marc Lilley, Aurélien Hees, Christian Chapman-Bird, Graham Woan, Peter Wolf

AI总结:

构建LISA端到端模拟与分析流水线,包含相对论参考系、时钟同步、激光频率建模等先进模拟与噪声降低算法,验证了噪声降低效果及参数估计能力。

摘要:

未来空间毫赫兹引力波探测器LISA产生的数据需要复杂的预处理,这可能会影响科学结果。证明此类处理算法的可行性并评估其性能及对科学的影响至关重要。我们正在构建一个端到端流水线,包含最先进的模拟和噪声降低算法。模拟必须包含全测量链的详细模型,捕捉影响仪器性能和处理算法的主要特征。特别是,我们在这些模拟中首次包含:对参考系的适当相对论处理及现实的数值优化轨道;星载时钟和时钟同步测量模型;总激光频率的适当建模,包括激光锁定、频率规划和多普勒频移;以及更好的星载处理。使用这些模拟数据,我们展示了我们的流水线能够降低最关键的噪声并形成同步观测量。通过注入来自验证双星的信号,我们证明在这一更现实的设置上可以获得良好的参数估计,扩展了之前LISA数据挑战的现有结果。

英文摘要:

The data produced by the future space-based millihertz gravitational-wave detector LISA will require nontrivial pre-processing, which might affect the science results. It is crucial to demonstrate the feasibility of such processing algorithms and assess their performance and impact on the science. We are building an end-to-end pipeline that includes state-of-the-art simulations and noise reduction algorithms. The simulations must include a detailed model of the full measurement chain, capturing the main features that affect the instrument performance and processing algorithms. In particular, we include in these simulations, for the first time, proper relativistic treatment of reference frames with realistic numerically-optimized orbits; a model for onboard clocks and clock synchronization measurements; proper modeling of total laser frequencies, including laser locking, frequency planning and Doppler shifts; and a better treatment of onboard processing. Using these simulated data, we show that our pipeline is able to reduce the most critical noises and form synchronized observables. By injecting signals from a verification binary, we demonstrate that good parameter estimation can be obtained on this more realistic setup, extending existing results from previous LISA Data Challenges.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑