标题： 快速检测和合并大质量黑洞双星信号的重建 显示英文标题

标题： Fast detection and reconstruction of merging Massive Black Hole Binary signals

摘要： 激光干涉空间天线（LISA）将探测来自宇宙中合并的超大质量黑洞双星（MBHBs）群体的引力波。 LISA的数据流将包含来自不同天体物理源的许多叠加信号，这需要一个全局拟合过程。 大多数MBHB信号足够强烈，可以在合并前几天甚至几周内被检测到；对于这些源，LISA能够在合并前很早预测合并时间以及天空中的大致位置。 在本文中，我们提出了一种针对LISA观测频段中的超大质量黑洞双星的快速检测和信号重构方案。 我们提出：(i) 一种用于MBHB合并的检测方案，允许对这些信号进行首次减去，以实现全局拟合，以及 (ii) 一种高效的早期检测方案，为合并前的信号提供合并时间估计，这将允许触发一个保护期，使LISA进入“勿扰”模式，并能够进行更详细的分析，从而促进多信使观测。 我们强调了在合并前检测中，多个同时重叠的MBHB信号的混淆效应。 显示英文摘要

摘要： The Laser Interferometer Space Antenna (LISA) will detect gravitational waves from the population of merging massive black holes binaries (MBHBs) throughout the Universe. The LISA data stream will feature many superposed signals from different astrophysical sources, requiring a global fit procedure. Most of the MBHB signals will be loud enough to be detected days or even weeks before the merger; and for those sources LISA will be able to predict the time of the merger well in advance of the coalescence, as well as an approximate position in the sky. In this paper, we present a fast detection and signal reconstruction scheme for massive black hole binaries in the LISA observation band. We propose: (i) a detection scheme for MBHB mergers allowing a first subtraction of these signals for the purpose of a global fit, and (ii) an efficient early detection scheme providing a time-of-merger estimate for a pre-merger signal, that will allow to trigger a protection period, placing LISA in ``do not disturb'' mode and enabling more detailed analysis that will facilitate multi-messenger observations. We highlight the effect of confusion of several overlapping in time MBHB signals in the pre-merger detection.