引力透镜的误报:引力波视角。

IF 3.7 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES
David Keitel
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引用次数: 0

摘要

对于首次发现一种新的天体物理现象,科学标准特别高。特别是在多信使环境中,对任何检测声明的后续观察也存在机会成本。因此,在寻找仍然难以捉摸的透镜引力波(GWs)时,需要小心控制误报。特别是,许多识别强透镜效应的方法依赖于某种形式的参数相似性或波形一致性,在快速增长的目录规模下,如果不采取适当的注意,可能会使它们暴露于一致但未透镜事件的假阳性。在所有透镜状态下对波形变形的搜索都受到简并的约束;我们需要在透镜效应、内在参数、未充分建模的效应(如轨道偏心率),甚至与广义相对论的偏差之间进行缓解。稳健的透镜效应研究还需要理解和减轻探测器数据中的故障和非平稳性。本文回顾了GW透镜搜索中可能的假阳性(及其反面:假阴性)的来源,以及社区正在采取的减轻假阳性的主要方法。本文是西奥·墨菲会议议题“多信使引力透镜(第二部分)”的一部分。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
False positives for gravitational lensing: the gravitational-wave perspective.

For the first detection of a novel astrophysical phenomenon, scientific standards are particularly high. Especially in a multi-messenger context, there are also opportunity costs to follow-up observations on any detection claims. So in searching for the still-elusive lensed gravitational waves (GWs), care needs to be taken in controlling false positives. In particular, many methods for identifying strong lensing rely on some form of parameter similarity or waveform consistency, which under rapidly growing catalogue sizes can expose them to false positives from coincident but unlensed events if proper care is not taken. Searches for waveform deformations in all lensing regimes are subject to degeneracies; we need to mitigate between lensing, intrinsic parameters, insufficiently modelled effects such as orbital eccentricity, or even deviations from general relativity. Robust lensing studies also require understanding and mitigation of glitches and non-stationarities in the detector data. This article reviews sources of possible false positives (and their flip side: false negatives) in GW lensing searches and the main approaches the community is pursuing to mitigate them.This article is part of the Theo Murphy meeting issue 'Multi-messenger gravitational lensing (Part 2)'.

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来源期刊
CiteScore
9.30
自引率
2.00%
发文量
367
审稿时长
3 months
期刊介绍: Continuing its long history of influential scientific publishing, Philosophical Transactions A publishes high-quality theme issues on topics of current importance and general interest within the physical, mathematical and engineering sciences, guest-edited by leading authorities and comprising new research, reviews and opinions from prominent researchers.
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