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arXiv 2407.20006gr-qcastro-ph.IM
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从引力波应变重建源运动

Reconstructing source motion from gravitational wave strain

Joseph Bayley, Chris Messenger, Graham Woan

AI总结:

提出基于normalising flow仅从引力波应变重建源运动和质量的方法,在圆轨道等模型上验证,可从多探测器数据重建包含简并运动的完整质量运动分布。

摘要:

对未建模的爆发引力波信号的搜索会返回短持续时间信号的潜在候选者。由于这些搜索中没有明确的源模型,因此需要理解并重建产生引力波的系统。在此,我们的目标是仅基于引力波应变来重建系统的源运动和质量。我们在两个模型上训练了normalising flow(归一化流),包括圆轨道和两个点质量的随机非物理运动。这些模型被用作一个玩具问题来说明该技术。然后,我们重建能够产生给定引力波信号的质量的可能运动分布。我们展示了从多个引力波探测器的应变数据中重建质量运动完整分布的能力。该分布包含了预期会产生相同引力波应变的简并运动。

英文摘要:

Searches for un-modelled burst gravitational wave signals return potential candidates for short duration signals. As there is no clear model for the source in these searches, one needs to understand and reconstruct the system that produced the gravitational waves. Here we aim to reconstruct the source motion and masses of a system based only on its gravitational wave strain. We train a normalising flow on two models including circular orbits and random unphysical motion of two point masses. These models are used as a toy problem to illustrate the technique. We then reconstruct a distribution of possible motions of masses that can produce the given gravitational wave signal. We demonstrate the ability to reconstruct the full distribution of possible mass motions from strain data across multiple gravitational wave detectors. This distribution encompasses the degenerate motions that are expected to produce identical gravitational wave strains.

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。

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