Thorne–Żytkow objects (TŻOs) are a class of stellar object comprised of a neutron star core surrounded by a large and diffuse envelope. Their exterior appearance is identical to red supergiants; the distinctive electromagnetic signature of a TŻO is a suite of unusual chemical abundance patterns, including excesses of Li, Rb, Mo, and Ca. However, electromagnetic observations cannot unambiguously identify the presence of a neutron star core. Detection of continuous gravitational wave emission from a rotating neutron star core would provide strong supporting evidence for the existence of TŻOs. We present a model for gravitational wave detector confirmation of TŻOs and demonstrate that these objects should be detectable with Advanced LIGO. We also investigate possible targets for joint optical and gravitational searches, and comment on prospects for detectability in both current and future gravitational wave detector networks.

Thorne-Żytkow 天体 (TŻOs) 是一类恒星天体，由一个中子星核心和一个大而漫射的包层包围。它们的外观与红超巨星相同；TŻO 独特的电磁特征是一组不寻常的化学丰度模式，包括过量的锂、铷、钼和钙。然而，电磁观测不能明确地确定中子星核心的存在。检测到来自旋转中子星核心的连续引力波发射将为 TŻOs 的存在提供强有力的支持证据。我们提出了一个用于 TŻOs 引力波探测器确认的模型，并证明这些物体应该可以用 Advanced LIGO 探测到。我们还调查了联合光学和引力搜索的可能目标，