Gravitational waves emitted from the coalescence of neutron star binaries open a new window to probe matter and fundamental physics in unexplored, extreme regimes. To extract information about the supranuclear matter inside neutron stars and the properties of the compact binary systems, robust theoretical prescriptions are required. We give an overview about general features of the dynamics and the gravitational wave signal during the binary neutron star coalescence. We briefly describe existing analytical and numerical approaches to investigate the highly dynamical, strong-field region during the merger. We review existing waveform approximants and discuss properties and possible advantages and shortcomings of individual waveform models, and their application for real gravitational-wave data analysis.

中子星双星的合并所发出的引力波打开了一个新的窗口，可以在未探索的极端条件下探测物质和基本物理学。为了提取有关中子星内核上物质和紧凑型双星系统性质的信息，需要可靠的理论规定。我们概述了双星中子星合并过程中动力学和重力波信号的一般特征。我们简要介绍了现有的分析和数值方法，以研究合并期间的高动态，强场区域。我们回顾了现有的波形近似值，并讨论了各个波形模型的特性以及可能的优点和缺点，以及它们在实际重力波数据分析中的应用。