Hybrid Gravitational Wave Systematics and Model Comparisons for Binary Neutron Star Systems

Compact binary systems are a source of many anticipated signals for current and future gravitational wave detectors. The detectability and measurement of any gravitational wave (GW) source is dependent on models of the inspiral, merger, and post merger of a compact binary system. Hybrid gravitational waves join analytical models of the insprial and numerical simulations of the merger and post merger to make a single model. Hybrid accuracy depends on a set of construction parameters, and can contribute to waveform systematic error when using hybrid models. We identify and study the effect construction parameters have on hybrid waveforms modeling binary neutron star (BNS) mergers used for waveform detection and parameter estimation to leading order. By minimizing the error contributions from these sources for non-spinning BNS simulations from the Computational Relativity (CoRe) library, we identify limitations to hybrid accuracy and determine, given these limitations, if a family of hybrids can be constructed within accuracy bounds needed by the LIGO detectors.