论文标题
关于丽莎科学表现，观察到来自大型黑洞二进制合并的短暂信号
On the LISA science performance in observations of short-lived signals from massive black hole binary coalescences
论文作者
论文摘要
大规模黑洞二进制系统的观察是激光干涉仪空间天线（LISA）的主要科学目标之一。该仪器的设计要求最近进行了修订：他们将要求设定为$ 0.1 \，\ mathrm {MHz} $，在较低频率下没有其他明确要求。这对观察到大型和高红移二进制组合产生的短寿命信号的观察有影响。在这里，我们考虑了最悲观的情况：（不太可能的）丽莎没有灵敏度低于$ 0.1 \，\ mathrm {MHz} $的情况。我们表明，从这些系统的重力辐射中存在较高的多极（超出主要$ \ ell = | m | = 2 $模式），可以通过总信噪比$ \ sim 10^3 $检测到，允许LISA保留该功能，以准确地测量物理参数，以构造弹射的位置，并构造了天空位置。为了说明这一点，我们考虑了几个精选的二进制文件（$ 4 \ times10^6-4 \ times 10^7 \，m_ \ odot $，其（$ \ ell = | m | = 2 $）重力波信号持续使用$ \ \ \ odot $，持续$ \ \ odot $持续$ \ \ \ odot $，该信号持续使用$ \ \ \ \ \ \ \ $ \ \ \ \ \ $ \ \ \ \ \ \ \ \ $ \ \ \ \ \ \ $ \ \ \ \ \ \ \ $ \ odot $ houth Bevertaignove 10^7 \ highteration $我们使用高度精确（自旋对齐的）波形近似Imrphenomxhm对发射的重力辐射进行建模，并对LISA噪声 - 正交时间延迟式间接时通道进行完全相干的贝叶斯分析。
The observation of massive black hole binary systems is one of the main science objectives of the Laser Interferometer Space Antenna (LISA). The instrument's design requirements have recently been revised: they set a requirement at $0.1\,\mathrm{mHz}$, with no additional explicit requirements at lower frequencies. This has implications for observations of the short-lived signals produced by the coalescence of massive and high-redshift binaries. Here we consider the most pessimistic scenario: the (unlikely) case in which LISA has no sensitivity below $0.1\,\mathrm{mHz}$. We show that the presence of higher multipoles (beyond the dominant $\ell = |m| = 2$ mode) in the gravitational radiation from these systems, which will be detectable with a total signal-to-noise ratio $\sim 10^3$, allows LISA to retain the capability to accurately measure the physical parameters, the redshift, and to constrain the sky location. To illustrate this point, we consider a few select binaries in a total (redshifted) mass range of $4 \times10^6 - 4 \times 10^7\,M_\odot$ whose ($\ell = |m| = 2$) gravitational-wave signals last between $\approx 12$ hours and $\approx 20$ days in band. We model the emitted gravitational radiation using the highly accurate (spin-aligned) waveform approximant IMRPhenomXHM and carry out a fully coherent Bayesian analysis on the LISA noise-orthogonal time-delay-interferometry channels.
