Prospects for Multimessenger Observations of Thorne–Żytkow Objects
Prospects for Multimessenger Observations of Thorne–Żytkow Objects
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DOI：
10.3847/1538-4357/abebe1
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发表时间：
2021-03
期刊：
影响因子：
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通讯作者：
L. DeMarchi;J. R. Sanders;E. Levesque
中科院分区：
文献类型：
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作者：
L. DeMarchi;J. R. Sanders;E. Levesque
Thorne-playytkow天体是一类由中子星星核和大的弥散包层组成的恒星天体。它们的外观与红超巨星相同; TtoO独特的电磁特征是一套不寻常的化学丰度模式，包括过量的Li，Rb，Mo和Ca。然而，电磁观测不能明确地确定中子星星核的存在。从旋转的中子星星核中探测到连续的引力波发射将为TtoO的存在提供强有力的支持证据。我们提出了一个模型的引力波探测器确认TtoOs，并证明这些对象应该与先进的LIGO检测。我们还研究了联合光学和引力搜索的可能目标，并评论了当前和未来引力波探测器网络的可探测性前景。
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.