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arXiv 1003.3486gr-qcastro-ph.HE
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引力波记忆效应

The gravitational-wave memory effect

Marc Favata

摘要:

非线性记忆效应是对引力波振幅的一种缓慢增长的、非振荡的贡献。它起源于由先前发射的波产生的引力波。在理想的引力波干涉仪中,具有记忆性的引力波会使被测质量产生永久位移,这种位移在波通过后仍然存在。令人惊讶的是,非线性记忆影响的信号幅度开始在领先的(牛顿四极)顺序。尽管如此,非线性记忆是不容易从目前的数值相对论模拟提取。在回顾了线性记忆和非线性记忆的基础上,本文总结了近年来的一些研究工作,包括:(1)记忆对螺旋波振幅的贡献的计算(2)首次计算了包含二元黑洞合并所有阶段的非线性记忆(螺旋,合并,振铃);和(3)现实的估计与LISA的内存的可检测性。

英文摘要:

The nonlinear memory effect is a slowly-growing, non-oscillatory contribution to the gravitational-wave amplitude. It originates from gravitational waves that are sourced by the previously emitted waves. In an ideal gravitational-wave interferometer a gravitational-wave with memory causes a permanent displacement of the test masses that persists after the wave has passed. Surprisingly, the nonlinear memory affects the signal amplitude starting at leading (Newtonian-quadrupole) order. Despite this fact, the nonlinear memory is not easily extracted from current numerical relativity simulations. After reviewing the linear and nonlinear memory I summarize some recent work, including: (1) computations of the memory contribution to the inspiral waveform amplitude (thus completing the waveform to third post-Newtonian order); (2) the first calculations of the nonlinear memory that include all phases of binary black hole coalescence (inspiral, merger, ringdown); and (3) realistic estimates of the detectability of the memory with LISA.

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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